diff --git a/Cargo.lock b/Cargo.lock
index 1be5f70..3d5f47b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -751,9 +751,9 @@ dependencies = [
 
 [[package]]
 name = "proptest"
-version = "1.3.1"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c003ac8c77cb07bb74f5f198bce836a689bcd5a42574612bf14d17bfd08c20e"
+checksum = "31b476131c3c86cb68032fdc5cb6d5a1045e3e42d96b69fa599fd77701e1f5bf"
 dependencies = [
  "bit-set",
  "bit-vec",
@@ -763,7 +763,7 @@ dependencies = [
  "rand",
  "rand_chacha",
  "rand_xorshift",
- "regex-syntax 0.7.5",
+ "regex-syntax",
  "rusty-fork",
  "tempfile",
  "unarray",
@@ -921,7 +921,7 @@ dependencies = [
  "aho-corasick",
  "memchr",
  "regex-automata",
- "regex-syntax 0.8.1",
+ "regex-syntax",
 ]
 
 [[package]]
@@ -932,15 +932,9 @@ checksum = "465c6fc0621e4abc4187a2bda0937bfd4f722c2730b29562e19689ea796c9a4b"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-syntax 0.8.1",
+ "regex-syntax",
 ]
 
-[[package]]
-name = "regex-syntax"
-version = "0.7.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da"
-
 [[package]]
 name = "regex-syntax"
 version = "0.8.1"
diff --git a/Cargo.toml b/Cargo.toml
index 536b2fb..e2b3c2b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ ndarray = "0.15.6"
 num-bigint = "0.4.4"
 num-bigint-dig = "0.8.4"
 num-traits = "0.2.17"
-proptest = "1.3.1"
+proptest = "1.4.0"
 prost = "0.12.2"
 prost-build = "0.12.1"
 rand = "0.8.5"