diff --git a/pkgs/development/libraries/c-ares/default.nix b/pkgs/development/libraries/c-ares/default.nix
index aeeda1bf5073..34f2e7bbf62a 100644
--- a/pkgs/development/libraries/c-ares/default.nix
+++ b/pkgs/development/libraries/c-ares/default.nix
@@ -18,12 +18,12 @@
 
 stdenv.mkDerivation rec {
   pname = "c-ares";
-  version = "1.34.4";
+  version = "1.34.5";
 
   src = fetchurl {
     # Note: tag name varies in some versions, e.g. v1.30.0, c-ares-1_17_0.
     url = "https://github.com/c-ares/${pname}/releases/download/v${version}/${pname}-${version}.tar.gz";
-    hash = "sha256-+jjb7WWe5MxaMt9eJ97aV1+mhSx5pyuhr4XeNaauIi8=";
+    hash = "sha256-fZNXkOmvCBwlxJX9E8LPzaR5KYNBjpY1jvbnMg7gY0Y=";
   };
 
   outputs = [