diff --git a/pkgs/development/compilers/ghc/8.8.1.nix b/pkgs/development/compilers/ghc/8.8.1.nix
index 81d1a6f9b8a..423eaf02d8c 100644
--- a/pkgs/development/compilers/ghc/8.8.1.nix
+++ b/pkgs/development/compilers/ghc/8.8.1.nix
@@ -86,12 +86,12 @@ let
 
 in
 stdenv.mkDerivation (rec {
-  version = "8.8.0.20190613";
+  version = "8.8.0.20190721";
   name = "${targetPrefix}ghc-${version}";
 
   src = fetchurl {
-    url = "https://downloads.haskell.org/~ghc/8.8.1-alpha2/ghc-${version}-src.tar.xz";
-    sha256 = "17531jabkdmlhj57mkshjfwlri2g3jgal8fw9zpkl1kbplnrivyr";
+    url = "https://downloads.haskell.org/ghc/8.8.1-rc1/ghc-${version}-src.tar.xz";
+    sha256 = "1ih76zpxk8ay84xjyaflqc754002y8pdaainqfvb4cnhy6lpb1br";
   };
 
   enableParallelBuilding = true;