diff --git a/pkgs/applications/blockchains/parity/beta.nix b/pkgs/applications/blockchains/parity/beta.nix
index c9da6f0e7a82..ffa509d2320e 100644
--- a/pkgs/applications/blockchains/parity/beta.nix
+++ b/pkgs/applications/blockchains/parity/beta.nix
@@ -1,6 +1,6 @@
 let
-  version     = "2.6.5";
-  sha256      = "1ykrsphqil68051wwp9b0259gsmfrj9xmx0pfhh2yvmmjzv7k4fv";
+  version     = "2.6.6";
+  sha256      = "1gx5qg9c588d5m564bnbly86663yrzb2hmlgv9zplwba7p0lpphl";
   cargoSha256 = "1xqmnirx2r91q5gy1skxl0f79xvaqzimq3l0cj4xvfms7mpdfbg1";
 in
   import ./parity.nix { inherit version sha256 cargoSha256; }
diff --git a/pkgs/applications/blockchains/parity/default.nix b/pkgs/applications/blockchains/parity/default.nix
index ba3491e084d0..1b5870b429b1 100644
--- a/pkgs/applications/blockchains/parity/default.nix
+++ b/pkgs/applications/blockchains/parity/default.nix
@@ -1,6 +1,6 @@
 let
-  version     = "2.5.10";
-  sha256      = "0s8llcb1xdzs2zb6rnbsa9hck7dj4m8mamzkkvr0xjmgvigskf64";
+  version     = "2.5.11";
+  sha256      = "1x2p559g2f30520v3kn46n737l5s1kwrn962dv73s6mb6n1lhs55";
   cargoSha256 = "16nf6y0hyffwdhxn1w4ms4zycs5lkzir8sj6c2lgsabig057hb6z";
 in
   import ./parity.nix { inherit version sha256 cargoSha256; }