diff --git a/pkgs/applications/networking/cluster/flink/default.nix b/pkgs/applications/networking/cluster/flink/default.nix
index 3d418f9a47f..f99c708161e 100644
--- a/pkgs/applications/networking/cluster/flink/default.nix
+++ b/pkgs/applications/networking/cluster/flink/default.nix
@@ -8,8 +8,8 @@ let
       sha256 = "18wqcqi3gyqd40nspih99gq7ylfs20b35f4dcrspffagwkfp2l4z";
     };
     "1.6" = {
-      flinkVersion = "1.9.0";
-      sha256 = "1dzfcmqz5j4b545wq2q3xb2xkbhqllr04s3av1afv54y61l5y952";
+      flinkVersion = "1.11.1";
+      sha256 = "0338bg2sb427c1rrf2cmsz63sz0yk6gclpli2lskq0mpx72wxpl0";
     };
   };
 in
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ jre ];
 
   installPhase = ''
-    rm bin/*.bat
+    rm bin/*.bat || true
 
     mkdir -p $out/bin $out/opt/flink
     mv * $out/opt/flink/