diff --git a/pkgs/applications/networking/cluster/flink/default.nix b/pkgs/applications/networking/cluster/flink/default.nix
index e5f437a89ad..424b2ddca91 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 = "1.6.2";
-      sha256 = "17fsr6yv1ayr7fw0r4pjlbpkn9ypzjs4brqndzr3gbzwrdc44arw";
+      flinkVersion = "1.8.1";
+      sha256 = "1ynxlkdxvrgww9hh7rlkhybrp5vl2slj3pqg2qzc8khpcgqx1h2g";
     };
   };
 in