diff --git a/pkgs/tools/package-management/cabal-install/1.18.0.nix b/pkgs/tools/package-management/cabal-install/1.18.0.1.nix
similarity index 90%
rename from pkgs/tools/package-management/cabal-install/1.18.0.nix
rename to pkgs/tools/package-management/cabal-install/1.18.0.1.nix
index 8b093bc925ca..ceb54effdd97 100644
--- a/pkgs/tools/package-management/cabal-install/1.18.0.nix
+++ b/pkgs/tools/package-management/cabal-install/1.18.0.1.nix
@@ -5,8 +5,8 @@
 
 cabal.mkDerivation (self: {
   pname = "cabal-install";
-  version = "1.18.0";
-  sha256 = "14c4i8cy2rnvjj2krv3swna53k2674xhpzqkmcr56lxnyzych5wh";
+  version = "1.18.0.1";
+  sha256 = "0b44w4iqzaq5119zjkpagd3a2279kz6xq5pk5rqnlnfn8a8ihdbb";
   isLibrary = false;
   isExecutable = true;
   buildDepends = [
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index d6497b49ff03..7de5605eed84 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -173,7 +173,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
     vector       = self.vector_0_10_0_1;
     xhtml        = self.xhtml_3000_2_1;
     zlib         = self.zlib_0_5_4_1;
-    cabalInstall = self.cabalInstall_1_18_0;
+    cabalInstall = self.cabalInstall_1_18_0_1;
     alex         = self.alex_3_0_5;
     haddock      = self.haddock_2_13_2;
     happy        = self.happy_1_18_10;
@@ -2394,7 +2394,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
   cabalInstall_0_10_2 = callPackage ../tools/package-management/cabal-install/0.10.2.nix {};
   cabalInstall_0_14_0 = callPackage ../tools/package-management/cabal-install/0.14.0.nix {};
   cabalInstall_1_16_0_2 = callPackage ../tools/package-management/cabal-install/1.16.0.2.nix {};
-  cabalInstall_1_18_0 = callPackage ../tools/package-management/cabal-install/1.18.0.nix {};
+  cabalInstall_1_18_0_1 = callPackage ../tools/package-management/cabal-install/1.18.0.1.nix {};
   cabalInstall = self.cabalInstall_1_18_0;
 
   gitAnnex = callPackage ../applications/version-management/git-and-tools/git-annex {};