diff --git a/build.gradle b/build.gradle
index 6896826..172fc36 100644
--- a/build.gradle
+++ b/build.gradle
@@ -48,7 +48,7 @@ java {
 
 group = 'com.schematichq'
 
-version = '1.1.1'
+version = '1.1.2'
 
 jar {
     dependsOn(":generatePomFileForMavenPublication")
@@ -79,7 +79,7 @@ publishing {
         maven(MavenPublication) {
             groupId = 'com.schematichq'
             artifactId = 'schematic-java'
-            version = '1.1.1'
+            version = '1.1.2'
             from components.java
             pom {
                 name = 'schematic'
diff --git a/src/main/java/com/schematic/api/core/ClientOptions.java b/src/main/java/com/schematic/api/core/ClientOptions.java
index 653a2c9..b65705a 100644
--- a/src/main/java/com/schematic/api/core/ClientOptions.java
+++ b/src/main/java/com/schematic/api/core/ClientOptions.java
@@ -33,7 +33,7 @@ private ClientOptions(
             {
                 put("X-Fern-Language", "JAVA");
                 put("X-Fern-SDK-Name", "com.schematic.fern:api-sdk");
-                put("X-Fern-SDK-Version", "1.1.1");
+                put("X-Fern-SDK-Version", "1.1.2");
             }
         });
         this.headerSuppliers = headerSuppliers;
diff --git a/src/main/java/com/schematic/api/core/RequestOptions.java b/src/main/java/com/schematic/api/core/RequestOptions.java
index 2411b1e..2b4fb2e 100644
--- a/src/main/java/com/schematic/api/core/RequestOptions.java
+++ b/src/main/java/com/schematic/api/core/RequestOptions.java
@@ -7,6 +7,7 @@
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.TimeUnit;
+import java.util.function.Supplier;
 
 public final class RequestOptions {
     private final String apiKey;
@@ -15,10 +16,21 @@ public final class RequestOptions {
 
     private final TimeUnit timeoutTimeUnit;
 
-    private RequestOptions(String apiKey, Optional<Integer> timeout, TimeUnit timeoutTimeUnit) {
+    private final Map<String, String> headers;
+
+    private final Map<String, Supplier<String>> headerSuppliers;
+
+    private RequestOptions(
+            String apiKey,
+            Optional<Integer> timeout,
+            TimeUnit timeoutTimeUnit,
+            Map<String, String> headers,
+            Map<String, Supplier<String>> headerSuppliers) {
         this.apiKey = apiKey;
         this.timeout = timeout;
         this.timeoutTimeUnit = timeoutTimeUnit;
+        this.headers = headers;
+        this.headerSuppliers = headerSuppliers;
     }
 
     public Optional<Integer> getTimeout() {
@@ -34,6 +46,10 @@ public Map<String, String> getHeaders() {
         if (this.apiKey != null) {
             headers.put("X-Schematic-Api-Key", this.apiKey);
         }
+        headers.putAll(this.headers);
+        this.headerSuppliers.forEach((key, supplier) -> {
+            headers.put(key, supplier.get());
+        });
         return headers;
     }
 
@@ -48,6 +64,10 @@ public static final class Builder {
 
         private TimeUnit timeoutTimeUnit = TimeUnit.SECONDS;
 
+        private final Map<String, String> headers = new HashMap<>();
+
+        private final Map<String, Supplier<String>> headerSuppliers = new HashMap<>();
+
         public Builder apiKey(String apiKey) {
             this.apiKey = apiKey;
             return this;
@@ -64,8 +84,18 @@ public Builder timeout(Integer timeout, TimeUnit timeoutTimeUnit) {
             return this;
         }
 
+        public Builder addHeader(String key, String value) {
+            this.headers.put(key, value);
+            return this;
+        }
+
+        public Builder addHeader(String key, Supplier<String> value) {
+            this.headerSuppliers.put(key, value);
+            return this;
+        }
+
         public RequestOptions build() {
-            return new RequestOptions(apiKey, timeout, timeoutTimeUnit);
+            return new RequestOptions(apiKey, timeout, timeoutTimeUnit, headers, headerSuppliers);
         }
     }
 }
diff --git a/src/main/java/com/schematic/api/resources/billing/BillingClient.java b/src/main/java/com/schematic/api/resources/billing/BillingClient.java
index e706a29..1fe43e8 100644
--- a/src/main/java/com/schematic/api/resources/billing/BillingClient.java
+++ b/src/main/java/com/schematic/api/resources/billing/BillingClient.java
@@ -874,7 +874,7 @@ public ListProductPricesResponse listProductPrices(
         }
         if (request.getPriceUsageType().isPresent()) {
             httpUrl.addQueryParameter(
-                    "price_usage_type", request.getPriceUsageType().get());
+                    "price_usage_type", request.getPriceUsageType().get().toString());
         }
         if (request.getWithoutLinkedToPlan().isPresent()) {
             httpUrl.addQueryParameter(
@@ -1078,7 +1078,7 @@ public ListBillingProductsResponse listBillingProducts(
         }
         if (request.getPriceUsageType().isPresent()) {
             httpUrl.addQueryParameter(
-                    "price_usage_type", request.getPriceUsageType().get());
+                    "price_usage_type", request.getPriceUsageType().get().toString());
         }
         if (request.getWithoutLinkedToPlan().isPresent()) {
             httpUrl.addQueryParameter(
@@ -1167,7 +1167,7 @@ public CountBillingProductsResponse countBillingProducts(
         }
         if (request.getPriceUsageType().isPresent()) {
             httpUrl.addQueryParameter(
-                    "price_usage_type", request.getPriceUsageType().get());
+                    "price_usage_type", request.getPriceUsageType().get().toString());
         }
         if (request.getWithoutLinkedToPlan().isPresent()) {
             httpUrl.addQueryParameter(
diff --git a/src/main/java/com/schematic/api/resources/billing/requests/CountBillingProductsRequest.java b/src/main/java/com/schematic/api/resources/billing/requests/CountBillingProductsRequest.java
index 3856688..978a21a 100644
--- a/src/main/java/com/schematic/api/resources/billing/requests/CountBillingProductsRequest.java
+++ b/src/main/java/com/schematic/api/resources/billing/requests/CountBillingProductsRequest.java
@@ -12,6 +12,7 @@
 import com.fasterxml.jackson.annotation.Nulls;
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.schematic.api.core.ObjectMappers;
+import com.schematic.api.resources.billing.types.CountBillingProductsRequestPriceUsageType;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
@@ -26,7 +27,7 @@ public final class CountBillingProductsRequest {
 
     private final Optional<String> q;
 
-    private final Optional<String> priceUsageType;
+    private final Optional<CountBillingProductsRequestPriceUsageType> priceUsageType;
 
     private final Optional<Boolean> withoutLinkedToPlan;
 
@@ -44,7 +45,7 @@ private CountBillingProductsRequest(
             Optional<String> ids,
             Optional<String> name,
             Optional<String> q,
-            Optional<String> priceUsageType,
+            Optional<CountBillingProductsRequestPriceUsageType> priceUsageType,
             Optional<Boolean> withoutLinkedToPlan,
             Optional<Boolean> withZeroPrice,
             Optional<Boolean> withPricesOnly,
@@ -79,7 +80,7 @@ public Optional<String> getQ() {
     }
 
     @JsonProperty("price_usage_type")
-    public Optional<String> getPriceUsageType() {
+    public Optional<CountBillingProductsRequestPriceUsageType> getPriceUsageType() {
         return priceUsageType;
     }
 
@@ -177,7 +178,7 @@ public static final class Builder {
 
         private Optional<String> q = Optional.empty();
 
-        private Optional<String> priceUsageType = Optional.empty();
+        private Optional<CountBillingProductsRequestPriceUsageType> priceUsageType = Optional.empty();
 
         private Optional<Boolean> withoutLinkedToPlan = Optional.empty();
 
@@ -241,12 +242,12 @@ public Builder q(String q) {
         }
 
         @JsonSetter(value = "price_usage_type", nulls = Nulls.SKIP)
-        public Builder priceUsageType(Optional<String> priceUsageType) {
+        public Builder priceUsageType(Optional<CountBillingProductsRequestPriceUsageType> priceUsageType) {
             this.priceUsageType = priceUsageType;
             return this;
         }
 
-        public Builder priceUsageType(String priceUsageType) {
+        public Builder priceUsageType(CountBillingProductsRequestPriceUsageType priceUsageType) {
             this.priceUsageType = Optional.ofNullable(priceUsageType);
             return this;
         }
diff --git a/src/main/java/com/schematic/api/resources/billing/requests/CreateBillingPriceRequestBody.java b/src/main/java/com/schematic/api/resources/billing/requests/CreateBillingPriceRequestBody.java
index c64a0c4..43ed8b2 100644
--- a/src/main/java/com/schematic/api/resources/billing/requests/CreateBillingPriceRequestBody.java
+++ b/src/main/java/com/schematic/api/resources/billing/requests/CreateBillingPriceRequestBody.java
@@ -12,6 +12,7 @@
 import com.fasterxml.jackson.annotation.Nulls;
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.schematic.api.core.ObjectMappers;
+import com.schematic.api.resources.billing.types.CreateBillingPriceRequestBodyUsageType;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
@@ -35,7 +36,7 @@ public final class CreateBillingPriceRequestBody {
 
     private final String productExternalId;
 
-    private final String usageType;
+    private final CreateBillingPriceRequestBodyUsageType usageType;
 
     private final Map<String, Object> additionalProperties;
 
@@ -47,7 +48,7 @@ private CreateBillingPriceRequestBody(
             int price,
             String priceExternalId,
             String productExternalId,
-            String usageType,
+            CreateBillingPriceRequestBodyUsageType usageType,
             Map<String, Object> additionalProperties) {
         this.currency = currency;
         this.interval = interval;
@@ -96,7 +97,7 @@ public String getProductExternalId() {
     }
 
     @JsonProperty("usage_type")
-    public String getUsageType() {
+    public CreateBillingPriceRequestBodyUsageType getUsageType() {
         return usageType;
     }
 
@@ -171,7 +172,7 @@ public interface ProductExternalIdStage {
     }
 
     public interface UsageTypeStage {
-        _FinalStage usageType(@NotNull String usageType);
+        _FinalStage usageType(@NotNull CreateBillingPriceRequestBodyUsageType usageType);
     }
 
     public interface _FinalStage {
@@ -204,7 +205,7 @@ public static final class Builder
 
         private String productExternalId;
 
-        private String usageType;
+        private CreateBillingPriceRequestBodyUsageType usageType;
 
         private Optional<String> meterId = Optional.empty();
 
@@ -270,7 +271,7 @@ public UsageTypeStage productExternalId(@NotNull String productExternalId) {
 
         @java.lang.Override
         @JsonSetter("usage_type")
-        public _FinalStage usageType(@NotNull String usageType) {
+        public _FinalStage usageType(@NotNull CreateBillingPriceRequestBodyUsageType usageType) {
             this.usageType = Objects.requireNonNull(usageType, "usageType must not be null");
             return this;
         }
diff --git a/src/main/java/com/schematic/api/resources/billing/requests/ListBillingProductsRequest.java b/src/main/java/com/schematic/api/resources/billing/requests/ListBillingProductsRequest.java
index 04dc4d1..50324cb 100644
--- a/src/main/java/com/schematic/api/resources/billing/requests/ListBillingProductsRequest.java
+++ b/src/main/java/com/schematic/api/resources/billing/requests/ListBillingProductsRequest.java
@@ -12,6 +12,7 @@
 import com.fasterxml.jackson.annotation.Nulls;
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.schematic.api.core.ObjectMappers;
+import com.schematic.api.resources.billing.types.ListBillingProductsRequestPriceUsageType;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
@@ -26,7 +27,7 @@ public final class ListBillingProductsRequest {
 
     private final Optional<String> q;
 
-    private final Optional<String> priceUsageType;
+    private final Optional<ListBillingProductsRequestPriceUsageType> priceUsageType;
 
     private final Optional<Boolean> withoutLinkedToPlan;
 
@@ -44,7 +45,7 @@ private ListBillingProductsRequest(
             Optional<String> ids,
             Optional<String> name,
             Optional<String> q,
-            Optional<String> priceUsageType,
+            Optional<ListBillingProductsRequestPriceUsageType> priceUsageType,
             Optional<Boolean> withoutLinkedToPlan,
             Optional<Boolean> withZeroPrice,
             Optional<Boolean> withPricesOnly,
@@ -79,7 +80,7 @@ public Optional<String> getQ() {
     }
 
     @JsonProperty("price_usage_type")
-    public Optional<String> getPriceUsageType() {
+    public Optional<ListBillingProductsRequestPriceUsageType> getPriceUsageType() {
         return priceUsageType;
     }
 
@@ -177,7 +178,7 @@ public static final class Builder {
 
         private Optional<String> q = Optional.empty();
 
-        private Optional<String> priceUsageType = Optional.empty();
+        private Optional<ListBillingProductsRequestPriceUsageType> priceUsageType = Optional.empty();
 
         private Optional<Boolean> withoutLinkedToPlan = Optional.empty();
 
@@ -241,12 +242,12 @@ public Builder q(String q) {
         }
 
         @JsonSetter(value = "price_usage_type", nulls = Nulls.SKIP)
-        public Builder priceUsageType(Optional<String> priceUsageType) {
+        public Builder priceUsageType(Optional<ListBillingProductsRequestPriceUsageType> priceUsageType) {
             this.priceUsageType = priceUsageType;
             return this;
         }
 
-        public Builder priceUsageType(String priceUsageType) {
+        public Builder priceUsageType(ListBillingProductsRequestPriceUsageType priceUsageType) {
             this.priceUsageType = Optional.ofNullable(priceUsageType);
             return this;
         }
diff --git a/src/main/java/com/schematic/api/resources/billing/requests/ListProductPricesRequest.java b/src/main/java/com/schematic/api/resources/billing/requests/ListProductPricesRequest.java
index 2620f16..6440405 100644
--- a/src/main/java/com/schematic/api/resources/billing/requests/ListProductPricesRequest.java
+++ b/src/main/java/com/schematic/api/resources/billing/requests/ListProductPricesRequest.java
@@ -12,6 +12,7 @@
 import com.fasterxml.jackson.annotation.Nulls;
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.schematic.api.core.ObjectMappers;
+import com.schematic.api.resources.billing.types.ListProductPricesRequestPriceUsageType;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
@@ -26,7 +27,7 @@ public final class ListProductPricesRequest {
 
     private final Optional<String> q;
 
-    private final Optional<String> priceUsageType;
+    private final Optional<ListProductPricesRequestPriceUsageType> priceUsageType;
 
     private final Optional<Boolean> withoutLinkedToPlan;
 
@@ -44,7 +45,7 @@ private ListProductPricesRequest(
             Optional<String> ids,
             Optional<String> name,
             Optional<String> q,
-            Optional<String> priceUsageType,
+            Optional<ListProductPricesRequestPriceUsageType> priceUsageType,
             Optional<Boolean> withoutLinkedToPlan,
             Optional<Boolean> withZeroPrice,
             Optional<Boolean> withPricesOnly,
@@ -79,7 +80,7 @@ public Optional<String> getQ() {
     }
 
     @JsonProperty("price_usage_type")
-    public Optional<String> getPriceUsageType() {
+    public Optional<ListProductPricesRequestPriceUsageType> getPriceUsageType() {
         return priceUsageType;
     }
 
@@ -177,7 +178,7 @@ public static final class Builder {
 
         private Optional<String> q = Optional.empty();
 
-        private Optional<String> priceUsageType = Optional.empty();
+        private Optional<ListProductPricesRequestPriceUsageType> priceUsageType = Optional.empty();
 
         private Optional<Boolean> withoutLinkedToPlan = Optional.empty();
 
@@ -241,12 +242,12 @@ public Builder q(String q) {
         }
 
         @JsonSetter(value = "price_usage_type", nulls = Nulls.SKIP)
-        public Builder priceUsageType(Optional<String> priceUsageType) {
+        public Builder priceUsageType(Optional<ListProductPricesRequestPriceUsageType> priceUsageType) {
             this.priceUsageType = priceUsageType;
             return this;
         }
 
-        public Builder priceUsageType(String priceUsageType) {
+        public Builder priceUsageType(ListProductPricesRequestPriceUsageType priceUsageType) {
             this.priceUsageType = Optional.ofNullable(priceUsageType);
             return this;
         }
diff --git a/src/main/java/com/schematic/api/resources/billing/types/CountBillingProductsParams.java b/src/main/java/com/schematic/api/resources/billing/types/CountBillingProductsParams.java
index a560515..7918a47 100644
--- a/src/main/java/com/schematic/api/resources/billing/types/CountBillingProductsParams.java
+++ b/src/main/java/com/schematic/api/resources/billing/types/CountBillingProductsParams.java
@@ -29,7 +29,7 @@ public final class CountBillingProductsParams {
 
     private final Optional<Integer> offset;
 
-    private final Optional<String> priceUsageType;
+    private final Optional<CountBillingProductsResponseParamsPriceUsageType> priceUsageType;
 
     private final Optional<String> q;
 
@@ -46,7 +46,7 @@ private CountBillingProductsParams(
             Optional<Integer> limit,
             Optional<String> name,
             Optional<Integer> offset,
-            Optional<String> priceUsageType,
+            Optional<CountBillingProductsResponseParamsPriceUsageType> priceUsageType,
             Optional<String> q,
             Optional<Boolean> withPricesOnly,
             Optional<Boolean> withZeroPrice,
@@ -91,7 +91,7 @@ public Optional<Integer> getOffset() {
     }
 
     @JsonProperty("price_usage_type")
-    public Optional<String> getPriceUsageType() {
+    public Optional<CountBillingProductsResponseParamsPriceUsageType> getPriceUsageType() {
         return priceUsageType;
     }
 
@@ -180,7 +180,7 @@ public static final class Builder {
 
         private Optional<Integer> offset = Optional.empty();
 
-        private Optional<String> priceUsageType = Optional.empty();
+        private Optional<CountBillingProductsResponseParamsPriceUsageType> priceUsageType = Optional.empty();
 
         private Optional<String> q = Optional.empty();
 
@@ -253,12 +253,12 @@ public Builder offset(Integer offset) {
         }
 
         @JsonSetter(value = "price_usage_type", nulls = Nulls.SKIP)
-        public Builder priceUsageType(Optional<String> priceUsageType) {
+        public Builder priceUsageType(Optional<CountBillingProductsResponseParamsPriceUsageType> priceUsageType) {
             this.priceUsageType = priceUsageType;
             return this;
         }
 
-        public Builder priceUsageType(String priceUsageType) {
+        public Builder priceUsageType(CountBillingProductsResponseParamsPriceUsageType priceUsageType) {
             this.priceUsageType = Optional.ofNullable(priceUsageType);
             return this;
         }
diff --git a/src/main/java/com/schematic/api/resources/billing/types/CountBillingProductsRequestPriceUsageType.java b/src/main/java/com/schematic/api/resources/billing/types/CountBillingProductsRequestPriceUsageType.java
new file mode 100644
index 0000000..f52ba99
--- /dev/null
+++ b/src/main/java/com/schematic/api/resources/billing/types/CountBillingProductsRequestPriceUsageType.java
@@ -0,0 +1,24 @@
+/**
+ * This file was auto-generated by Fern from our API Definition.
+ */
+package com.schematic.api.resources.billing.types;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum CountBillingProductsRequestPriceUsageType {
+    LICENSED("licensed"),
+
+    METERED("metered");
+
+    private final String value;
+
+    CountBillingProductsRequestPriceUsageType(String value) {
+        this.value = value;
+    }
+
+    @JsonValue
+    @java.lang.Override
+    public String toString() {
+        return this.value;
+    }
+}
diff --git a/src/main/java/com/schematic/api/resources/billing/types/CountBillingProductsResponseParamsPriceUsageType.java b/src/main/java/com/schematic/api/resources/billing/types/CountBillingProductsResponseParamsPriceUsageType.java
new file mode 100644
index 0000000..c0440ac
--- /dev/null
+++ b/src/main/java/com/schematic/api/resources/billing/types/CountBillingProductsResponseParamsPriceUsageType.java
@@ -0,0 +1,24 @@
+/**
+ * This file was auto-generated by Fern from our API Definition.
+ */
+package com.schematic.api.resources.billing.types;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum CountBillingProductsResponseParamsPriceUsageType {
+    LICENSED("licensed"),
+
+    METERED("metered");
+
+    private final String value;
+
+    CountBillingProductsResponseParamsPriceUsageType(String value) {
+        this.value = value;
+    }
+
+    @JsonValue
+    @java.lang.Override
+    public String toString() {
+        return this.value;
+    }
+}
diff --git a/src/main/java/com/schematic/api/resources/billing/types/CreateBillingPriceRequestBodyUsageType.java b/src/main/java/com/schematic/api/resources/billing/types/CreateBillingPriceRequestBodyUsageType.java
new file mode 100644
index 0000000..69543bf
--- /dev/null
+++ b/src/main/java/com/schematic/api/resources/billing/types/CreateBillingPriceRequestBodyUsageType.java
@@ -0,0 +1,24 @@
+/**
+ * This file was auto-generated by Fern from our API Definition.
+ */
+package com.schematic.api.resources.billing.types;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum CreateBillingPriceRequestBodyUsageType {
+    LICENSED("licensed"),
+
+    METERED("metered");
+
+    private final String value;
+
+    CreateBillingPriceRequestBodyUsageType(String value) {
+        this.value = value;
+    }
+
+    @JsonValue
+    @java.lang.Override
+    public String toString() {
+        return this.value;
+    }
+}
diff --git a/src/main/java/com/schematic/api/resources/billing/types/ListBillingProductsParams.java b/src/main/java/com/schematic/api/resources/billing/types/ListBillingProductsParams.java
index 056b450..7235d48 100644
--- a/src/main/java/com/schematic/api/resources/billing/types/ListBillingProductsParams.java
+++ b/src/main/java/com/schematic/api/resources/billing/types/ListBillingProductsParams.java
@@ -29,7 +29,7 @@ public final class ListBillingProductsParams {
 
     private final Optional<Integer> offset;
 
-    private final Optional<String> priceUsageType;
+    private final Optional<ListBillingProductsResponseParamsPriceUsageType> priceUsageType;
 
     private final Optional<String> q;
 
@@ -46,7 +46,7 @@ private ListBillingProductsParams(
             Optional<Integer> limit,
             Optional<String> name,
             Optional<Integer> offset,
-            Optional<String> priceUsageType,
+            Optional<ListBillingProductsResponseParamsPriceUsageType> priceUsageType,
             Optional<String> q,
             Optional<Boolean> withPricesOnly,
             Optional<Boolean> withZeroPrice,
@@ -91,7 +91,7 @@ public Optional<Integer> getOffset() {
     }
 
     @JsonProperty("price_usage_type")
-    public Optional<String> getPriceUsageType() {
+    public Optional<ListBillingProductsResponseParamsPriceUsageType> getPriceUsageType() {
         return priceUsageType;
     }
 
@@ -180,7 +180,7 @@ public static final class Builder {
 
         private Optional<Integer> offset = Optional.empty();
 
-        private Optional<String> priceUsageType = Optional.empty();
+        private Optional<ListBillingProductsResponseParamsPriceUsageType> priceUsageType = Optional.empty();
 
         private Optional<String> q = Optional.empty();
 
@@ -253,12 +253,12 @@ public Builder offset(Integer offset) {
         }
 
         @JsonSetter(value = "price_usage_type", nulls = Nulls.SKIP)
-        public Builder priceUsageType(Optional<String> priceUsageType) {
+        public Builder priceUsageType(Optional<ListBillingProductsResponseParamsPriceUsageType> priceUsageType) {
             this.priceUsageType = priceUsageType;
             return this;
         }
 
-        public Builder priceUsageType(String priceUsageType) {
+        public Builder priceUsageType(ListBillingProductsResponseParamsPriceUsageType priceUsageType) {
             this.priceUsageType = Optional.ofNullable(priceUsageType);
             return this;
         }
diff --git a/src/main/java/com/schematic/api/resources/billing/types/ListBillingProductsRequestPriceUsageType.java b/src/main/java/com/schematic/api/resources/billing/types/ListBillingProductsRequestPriceUsageType.java
new file mode 100644
index 0000000..c98f627
--- /dev/null
+++ b/src/main/java/com/schematic/api/resources/billing/types/ListBillingProductsRequestPriceUsageType.java
@@ -0,0 +1,24 @@
+/**
+ * This file was auto-generated by Fern from our API Definition.
+ */
+package com.schematic.api.resources.billing.types;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum ListBillingProductsRequestPriceUsageType {
+    LICENSED("licensed"),
+
+    METERED("metered");
+
+    private final String value;
+
+    ListBillingProductsRequestPriceUsageType(String value) {
+        this.value = value;
+    }
+
+    @JsonValue
+    @java.lang.Override
+    public String toString() {
+        return this.value;
+    }
+}
diff --git a/src/main/java/com/schematic/api/resources/billing/types/ListBillingProductsResponseParamsPriceUsageType.java b/src/main/java/com/schematic/api/resources/billing/types/ListBillingProductsResponseParamsPriceUsageType.java
new file mode 100644
index 0000000..d556648
--- /dev/null
+++ b/src/main/java/com/schematic/api/resources/billing/types/ListBillingProductsResponseParamsPriceUsageType.java
@@ -0,0 +1,24 @@
+/**
+ * This file was auto-generated by Fern from our API Definition.
+ */
+package com.schematic.api.resources.billing.types;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum ListBillingProductsResponseParamsPriceUsageType {
+    LICENSED("licensed"),
+
+    METERED("metered");
+
+    private final String value;
+
+    ListBillingProductsResponseParamsPriceUsageType(String value) {
+        this.value = value;
+    }
+
+    @JsonValue
+    @java.lang.Override
+    public String toString() {
+        return this.value;
+    }
+}
diff --git a/src/main/java/com/schematic/api/resources/billing/types/ListProductPricesParams.java b/src/main/java/com/schematic/api/resources/billing/types/ListProductPricesParams.java
index 4b6415e..46c81ba 100644
--- a/src/main/java/com/schematic/api/resources/billing/types/ListProductPricesParams.java
+++ b/src/main/java/com/schematic/api/resources/billing/types/ListProductPricesParams.java
@@ -29,7 +29,7 @@ public final class ListProductPricesParams {
 
     private final Optional<Integer> offset;
 
-    private final Optional<String> priceUsageType;
+    private final Optional<ListProductPricesResponseParamsPriceUsageType> priceUsageType;
 
     private final Optional<String> q;
 
@@ -46,7 +46,7 @@ private ListProductPricesParams(
             Optional<Integer> limit,
             Optional<String> name,
             Optional<Integer> offset,
-            Optional<String> priceUsageType,
+            Optional<ListProductPricesResponseParamsPriceUsageType> priceUsageType,
             Optional<String> q,
             Optional<Boolean> withPricesOnly,
             Optional<Boolean> withZeroPrice,
@@ -91,7 +91,7 @@ public Optional<Integer> getOffset() {
     }
 
     @JsonProperty("price_usage_type")
-    public Optional<String> getPriceUsageType() {
+    public Optional<ListProductPricesResponseParamsPriceUsageType> getPriceUsageType() {
         return priceUsageType;
     }
 
@@ -180,7 +180,7 @@ public static final class Builder {
 
         private Optional<Integer> offset = Optional.empty();
 
-        private Optional<String> priceUsageType = Optional.empty();
+        private Optional<ListProductPricesResponseParamsPriceUsageType> priceUsageType = Optional.empty();
 
         private Optional<String> q = Optional.empty();
 
@@ -253,12 +253,12 @@ public Builder offset(Integer offset) {
         }
 
         @JsonSetter(value = "price_usage_type", nulls = Nulls.SKIP)
-        public Builder priceUsageType(Optional<String> priceUsageType) {
+        public Builder priceUsageType(Optional<ListProductPricesResponseParamsPriceUsageType> priceUsageType) {
             this.priceUsageType = priceUsageType;
             return this;
         }
 
-        public Builder priceUsageType(String priceUsageType) {
+        public Builder priceUsageType(ListProductPricesResponseParamsPriceUsageType priceUsageType) {
             this.priceUsageType = Optional.ofNullable(priceUsageType);
             return this;
         }
diff --git a/src/main/java/com/schematic/api/resources/billing/types/ListProductPricesRequestPriceUsageType.java b/src/main/java/com/schematic/api/resources/billing/types/ListProductPricesRequestPriceUsageType.java
new file mode 100644
index 0000000..085d59d
--- /dev/null
+++ b/src/main/java/com/schematic/api/resources/billing/types/ListProductPricesRequestPriceUsageType.java
@@ -0,0 +1,24 @@
+/**
+ * This file was auto-generated by Fern from our API Definition.
+ */
+package com.schematic.api.resources.billing.types;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum ListProductPricesRequestPriceUsageType {
+    LICENSED("licensed"),
+
+    METERED("metered");
+
+    private final String value;
+
+    ListProductPricesRequestPriceUsageType(String value) {
+        this.value = value;
+    }
+
+    @JsonValue
+    @java.lang.Override
+    public String toString() {
+        return this.value;
+    }
+}
diff --git a/src/main/java/com/schematic/api/resources/billing/types/ListProductPricesResponseParamsPriceUsageType.java b/src/main/java/com/schematic/api/resources/billing/types/ListProductPricesResponseParamsPriceUsageType.java
new file mode 100644
index 0000000..8f5236b
--- /dev/null
+++ b/src/main/java/com/schematic/api/resources/billing/types/ListProductPricesResponseParamsPriceUsageType.java
@@ -0,0 +1,24 @@
+/**
+ * This file was auto-generated by Fern from our API Definition.
+ */
+package com.schematic.api.resources.billing.types;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum ListProductPricesResponseParamsPriceUsageType {
+    LICENSED("licensed"),
+
+    METERED("metered");
+
+    private final String value;
+
+    ListProductPricesResponseParamsPriceUsageType(String value) {
+        this.value = value;
+    }
+
+    @JsonValue
+    @java.lang.Override
+    public String toString() {
+        return this.value;
+    }
+}