diff --git a/pkgs/development/compilers/sbcl/default.nix b/pkgs/development/compilers/sbcl/default.nix
index bc4d345f0e3f..943c9ca627e2 100644
--- a/pkgs/development/compilers/sbcl/default.nix
+++ b/pkgs/development/compilers/sbcl/default.nix
@@ -29,8 +29,8 @@ let
     "2.4.10".sha256 = "sha256-zus5a2nSkT7uBIQcKva+ylw0LOFGTD/j5FPy3hDF4vg=";
     # By unofficial and very loose convention we keep the latest version of
     # SBCL, and the previous one in case someone quickly needs to roll back.
-    "2.5.5".sha256 = "sha256-ZQJnCvs2G6m+RKL6/pr5tZ57JK5QmnkaZrVIHylVlQs=";
     "2.5.7".sha256 = "sha256-xPr+t5VpnVvP+QhQkazHYtz15V+FI1Yl89eu8SyJ0dM=";
+    "2.5.9".sha256 = "sha256-0bGQItQ9xJPtyXK25ZyTrmaEyWP90rQTsJZeGM1r0eI=";
   };
   # Collection of pre-built SBCL binaries for platforms that need them for
   # bootstrapping. Ideally these are to be avoided.  If ECL (or any other
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 33113ced62b1..81bae1171116 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9067,14 +9067,6 @@ with pkgs;
       "3000"
     ];
   };
-  sbcl_2_5_5 = wrapLisp {
-    pkg = callPackage ../development/compilers/sbcl { version = "2.5.5"; };
-    faslExt = "fasl";
-    flags = [
-      "--dynamic-space-size"
-      "3000"
-    ];
-  };
   sbcl_2_5_7 = wrapLisp {
     pkg = callPackage ../development/compilers/sbcl { version = "2.5.7"; };
     faslExt = "fasl";
@@ -9083,7 +9075,15 @@ with pkgs;
       "3000"
     ];
   };
-  sbcl = sbcl_2_5_7;
+  sbcl_2_5_9 = wrapLisp {
+    pkg = callPackage ../development/compilers/sbcl { version = "2.5.9"; };
+    faslExt = "fasl";
+    flags = [
+      "--dynamic-space-size"
+      "3000"
+    ];
+  };
+  sbcl = sbcl_2_5_9;
 
   sbclPackages = recurseIntoAttrs sbcl.pkgs;