diff --git a/pkgs/development/interpreters/php/default.nix b/pkgs/development/interpreters/php/default.nix
index 6760b88dac6..d498a922b4c 100644
--- a/pkgs/development/interpreters/php/default.nix
+++ b/pkgs/development/interpreters/php/default.nix
@@ -293,8 +293,8 @@ in {
   };
 
   php55 = generic {
-    version = "5.5.30";
-    sha256 = "0a9v7jq8mr15dcim23rzcfgpijc5k1rkc4qv9as1rpgc7iqjlcz7";
+    version = "5.5.31";
+    sha256 = "0xx23gb70jsgbd772hy8f79wh2rja617s17gnx4vgklxk8mkhjpv";
   };
 
   php56 = generic {