diff --git a/Cargo.lock b/Cargo.lock
index dfa0f4087..ebcff8e6f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -203,18 +203,18 @@ dependencies = [
 
 [[package]]
 name = "bit-set"
-version = "0.5.3"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0700ddab506f33b20a03b13996eccd309a48e5ff77d0d95926aa0210fb4e95f1"
+checksum = "08807e080ed7f9d5433fa9b275196cfc35414f66a0c79d864dc51a0d825231a3"
 dependencies = [
  "bit-vec",
 ]
 
 [[package]]
 name = "bit-vec"
-version = "0.6.3"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349f9b6a179ed607305526ca489b34ad0a41aed5f7980fa90eb03160b69598fb"
+checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
 
 [[package]]
 name = "bitflags"
@@ -1173,9 +1173,9 @@ dependencies = [
 
 [[package]]
 name = "proptest"
-version = "1.5.0"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4c2511913b88df1637da85cc8d96ec8e43a3f8bb8ccb71ee1ac240d6f3df58d"
+checksum = "14cae93065090804185d3b75f0bf93b8eeda30c7a9b4a33d3bdb3988d6229e50"
 dependencies = [
  "bit-set",
  "bit-vec",
diff --git a/base32ct/Cargo.toml b/base32ct/Cargo.toml
index 57124e529..6686e2efb 100644
--- a/base32ct/Cargo.toml
+++ b/base32ct/Cargo.toml
@@ -19,7 +19,7 @@ rust-version = "1.65"
 
 [dev-dependencies]
 base32 = "0.5"
-proptest = { version = "1.5", default-features = false, features = ["std"] }
+proptest = { version = "1.6", default-features = false, features = ["std"] }
 
 [features]
 alloc = []
diff --git a/base64ct/Cargo.toml b/base64ct/Cargo.toml
index fae4f38a5..f07a13362 100644
--- a/base64ct/Cargo.toml
+++ b/base64ct/Cargo.toml
@@ -19,7 +19,7 @@ rust-version = "1.65"
 
 [dev-dependencies]
 base64 = "0.22"
-proptest = { version = "1.5", default-features = false, features = ["std"] }
+proptest = { version = "1.6", default-features = false, features = ["std"] }
 
 [features]
 alloc = []