diff --git a/pkgs/applications/networking/remote/putty/default.nix b/pkgs/applications/networking/remote/putty/default.nix
index 512a396fd0b7..df95f5b9d6f7 100644
--- a/pkgs/applications/networking/remote/putty/default.nix
+++ b/pkgs/applications/networking/remote/putty/default.nix
@@ -3,7 +3,7 @@
 }:
 
 stdenv.mkDerivation rec {
-  version = "0.80";
+  version = "0.81";
   pname = "putty";
 
   src = fetchurl {
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
       "https://the.earth.li/~sgtatham/putty/${version}/${pname}-${version}.tar.gz"
       "ftp://ftp.wayne.edu/putty/putty-website-mirror/${version}/${pname}-${version}.tar.gz"
     ];
-    hash = "sha256-IBPIOnIbF1NSnpCQ98ODDo/kyAoHDMznZFObrbP2cIE=";
+    hash = "sha256-y4sAqU9FNJTjRaPfKB16PtJrsN1+NiZPFFIG+IV2Of4=";
   };
 
   nativeBuildInputs = [ cmake perl pkg-config copyDesktopItems ];