diff --git a/Cargo.lock b/Cargo.lock
index c08807e1..4fec193c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -588,9 +588,9 @@ 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/Cargo.toml b/Cargo.toml
index 218021f0..b1b47f81 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,7 +27,7 @@ spki = { version = "0.7.2", default-features = false, features = ["alloc"] }
 zeroize = { version = "1.5", features = ["alloc"] }
 
 # optional dependencies
-sha1 = { version = "0.10.5", optional = true, default-features = false, features = ["oid"] }
+sha1 = { version = "0.10.6", optional = true, default-features = false, features = ["oid"] }
 sha2 = { version = "0.10.6", optional = true, default-features = false, features = ["oid"] }
 serde = { version = "1.0.184", optional = true, default-features = false, features = ["derive"] }
 
@@ -40,7 +40,7 @@ rand_xorshift = "0.3"
 rand_chacha = "0.3"
 rand = "0.8"
 rand_core = { version = "0.6", default-features = false }
-sha1 = { version = "0.10.5", default-features = false, features = ["oid"] }
+sha1 = { version = "0.10.6", default-features = false, features = ["oid"] }
 sha2 = { version = "0.10.6", default-features = false, features = ["oid"] }
 sha3 = { version = "0.10.7", default-features = false, features = ["oid"] }