diff --git a/pkgs/development/libraries/libksba/default.nix b/pkgs/development/libraries/libksba/default.nix
index 8f22ede81669..95b9277d5467 100644
--- a/pkgs/development/libraries/libksba/default.nix
+++ b/pkgs/development/libraries/libksba/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "libksba";
-  version = "1.6.5";
+  version = "1.6.6";
 
   src = fetchurl {
     url = "mirror://gnupg/libksba/libksba-${version}.tar.bz2";
-    hash = "sha256-pWRijFdMmSh5mHU/mNdQur2RpOnbRR9GrRQEZu8qbRY=";
+    hash = "sha256-XewDPSEVWTOIOMDElXxz39w+6G9zl31ieWQMnNCM5qQ=";
   };
 
   outputs = [ "out" "dev" "info" ];