diff --git a/Cargo.toml b/Cargo.toml
index 8415467..ff0fec5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,7 +25,7 @@ libsecp256k1 = "0.3.5"
 sha2 = "0.9.2"
 
 # openssl aes
-openssl = {version = "0.10", optional = true}
+openssl = {version = "0.10.31", optional = true}
 
 # pure rust aes
 aes-gcm = {version = "0.8.0", optional = true}