diff --git a/Cargo.lock b/Cargo.lock
index 2423c36e5..d0d9a00d8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1400,9 +1400,9 @@ dependencies = [
 
 [[package]]
 name = "sha1"
-version = "0.10.5"
+version = "0.10.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f04293dc80c3993519f2d7f6f511707ee7094fe0c6d3406feb330cdb3540eba3"
+checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
 dependencies = [
  "cfg-if",
  "cpufeatures",
diff --git a/pkcs5/Cargo.toml b/pkcs5/Cargo.toml
index fba579c0c..2596f266f 100644
--- a/pkcs5/Cargo.toml
+++ b/pkcs5/Cargo.toml
@@ -24,7 +24,7 @@ aes = { version = "0.8.3", optional = true, default-features = false }
 des = { version = "0.8.1", optional = true, default-features = false }
 pbkdf2 = { version = "0.12.1", optional = true, default-features = false }
 scrypt = { version = "0.11", optional = true, default-features = false }
-sha1 = { version = "0.10.1", optional = true, default-features = false }
+sha1 = { version = "0.10.6", optional = true, default-features = false }
 sha2 = { version = "0.10.2", optional = true, default-features = false }
 
 [dev-dependencies]
diff --git a/x509-cert/Cargo.toml b/x509-cert/Cargo.toml
index a1188c1fd..f63a46b65 100644
--- a/x509-cert/Cargo.toml
+++ b/x509-cert/Cargo.toml
@@ -21,7 +21,7 @@ spki = { version = "0.7.2", features = ["alloc"] }
 
 # optional dependencies
 arbitrary = { version = "1.3", features = ["derive"], optional = true }
-sha1 = { version = "0.10.0", optional = true }
+sha1 = { version = "0.10.6", optional = true }
 signature = { version = "2.1.0", features = ["rand_core"], optional = true }
 
 [dev-dependencies]