diff --git a/pkgs/development/libraries/attr/default.nix b/pkgs/development/libraries/attr/default.nix
index 4ad1525c2e09f..4815497da14f5 100644
--- a/pkgs/development/libraries/attr/default.nix
+++ b/pkgs/development/libraries/attr/default.nix
@@ -7,11 +7,11 @@
 
 stdenv.mkDerivation rec {
   pname = "attr";
-  version = "2.5.1";
+  version = "2.5.2";
 
   src = fetchurl {
     url = "mirror://savannah/attr/${pname}-${version}.tar.gz";
-    sha256 = "1y6sibbkrcjygv8naadnsg6xmsqwfh6cwrqk01l0v2i5kfacdqds";
+    sha256 = "sha256-Ob9nRS+kHQlIwhl2AQU/SLPXigKTiXNDMqYwmmgMbIc=";
   };
 
   outputs = [ "bin" "dev" "out" "man" "doc" ];