diff --git a/pkgs/development/compilers/sbcl/src-for-default.nix b/pkgs/development/compilers/sbcl/src-for-default.nix
index beb4c61e377..66e389947a0 100644
--- a/pkgs/development/compilers/sbcl/src-for-default.nix
+++ b/pkgs/development/compilers/sbcl/src-for-default.nix
@@ -1,9 +1,9 @@
 rec {
-   version="1.0.55";
-   name="sbcl-1.0.55";
-   hash="1b87s99d000khjpg8i7bcp28mph8812axwfh64a6qarhkixnl8g3";
-   url="http://downloads.sourceforge.net/project/sbcl/sbcl/1.0.55/sbcl-1.0.55-source.tar.bz2";
-   advertisedUrl="http://downloads.sourceforge.net/project/sbcl/sbcl/1.0.55/sbcl-1.0.55-source.tar.bz2";
+   version="1.0.56";
+   name="sbcl-1.0.56";
+   hash="0cq5hyzv3nnva0y1y6zjyd7rfdwwpxswnvmbfmqvhihz72ivyl1w";
+   url="http://downloads.sourceforge.net/project/sbcl/sbcl/1.0.56/sbcl-1.0.56-source.tar.bz2";
+   advertisedUrl="http://downloads.sourceforge.net/project/sbcl/sbcl/1.0.56/sbcl-1.0.56-source.tar.bz2";
   
   
 }