diff --git a/Cargo.lock b/Cargo.lock
index 3daf9fa43..877603d54 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -548,12 +548,9 @@ dependencies = [
 
 [[package]]
 name = "fastrand"
-version = "1.9.0"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e51093e27b0797c359783294ca4f0a911c270184cb10f85783b118614a1501be"
-dependencies = [
- "instant",
-]
+checksum = "6999dc1837253364c2ebb0704ba97994bd874e8f195d665c50b7548f6ea92764"
 
 [[package]]
 name = "ff"
@@ -774,26 +771,6 @@ dependencies = [
  "generic-array",
 ]
 
-[[package]]
-name = "instant"
-version = "0.1.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
-dependencies = [
- "cfg-if",
-]
-
-[[package]]
-name = "io-lifetimes"
-version = "1.0.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eae7b9aee968036d54dce06cebaefd919e4472e753296daccd6d344e3e2df0c2"
-dependencies = [
- "hermit-abi",
- "libc",
- "windows-sys",
-]
-
 [[package]]
 name = "is-terminal"
 version = "0.4.9"
@@ -801,7 +778,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cb0889898416213fab133e1d33a0e5858a48177452750691bde3666d0fdbaf8b"
 dependencies = [
  "hermit-abi",
- "rustix 0.38.3",
+ "rustix",
  "windows-sys",
 ]
 
@@ -859,12 +836,6 @@ version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7012b1bbb0719e1097c47611d3898568c546d597c2e74d66f6087edd5233ff4"
 
-[[package]]
-name = "linux-raw-sys"
-version = "0.3.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef53942eb7bf7ff43a617b3e2c1c4a5ecf5944a7c1bc12d7ee39bbb15e5c1519"
-
 [[package]]
 name = "linux-raw-sys"
 version = "0.4.3"
@@ -1349,20 +1320,6 @@ dependencies = [
  "semver",
 ]
 
-[[package]]
-name = "rustix"
-version = "0.37.23"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d69718bf81c6127a49dc64e44a742e8bb9213c0ff8869a22c308f84c1d4ab06"
-dependencies = [
- "bitflags 1.3.2",
- "errno",
- "io-lifetimes",
- "libc",
- "linux-raw-sys 0.3.8",
- "windows-sys",
-]
-
 [[package]]
 name = "rustix"
 version = "0.38.3"
@@ -1372,7 +1329,7 @@ dependencies = [
  "bitflags 2.3.3",
  "errno",
  "libc",
- "linux-raw-sys 0.4.3",
+ "linux-raw-sys",
  "windows-sys",
 ]
 
@@ -1482,9 +1439,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.103"
+version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d03b412469450d4404fe8499a268edd7f8b79fecb074b0d812ad64ca21f4031b"
+checksum = "076066c5f1078eac5b722a31827a8832fe108bed65dfa75e233c89f8206e976c"
 dependencies = [
  "itoa",
  "ryu",
@@ -1629,15 +1586,14 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.6.0"
+version = "3.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "31c0432476357e58790aaa47a8efb0c5138f137343f3b5f23bd36a27e3b0a6d6"
+checksum = "5486094ee78b2e5038a6382ed7645bc084dc2ec433426ca4c3cb61e2007b8998"
 dependencies = [
- "autocfg",
  "cfg-if",
  "fastrand",
  "redox_syscall",
- "rustix 0.37.23",
+ "rustix",
  "windows-sys",
 ]
 
diff --git a/base64ct/Cargo.toml b/base64ct/Cargo.toml
index d8c6cf890..faea9ec19 100644
--- a/base64ct/Cargo.toml
+++ b/base64ct/Cargo.toml
@@ -18,7 +18,7 @@ rust-version = "1.60"
 
 [dev-dependencies]
 base64 = "0.21"
-proptest = "1"
+proptest = { version = "1", default-features = false, features = ["std"] }
 
 [features]
 alloc = []
diff --git a/x509-cert/test-support/Cargo.toml b/x509-cert/test-support/Cargo.toml
index 2781fda8e..2fdcf6033 100644
--- a/x509-cert/test-support/Cargo.toml
+++ b/x509-cert/test-support/Cargo.toml
@@ -13,5 +13,5 @@ readme = "README.md"
 
 [dependencies]
 serde = { version = "1", features = ["derive"] }
-serde_json = "1.0.103"
-tempfile = "3.5.0"
+serde_json = "1"
+tempfile = "3"