diff --git a/default.nix b/default.nix
index ffbc53da5117f73f85de5ed248d0fea9965cedc1..d8878a7cf9bc4c83c675b5470ea546842b3ec50f 100644
--- a/default.nix
+++ b/default.nix
@@ -186,10 +186,10 @@ in
   #
   # GHC 9.2
   #
-  "ghc-9_2_1-alpha1" = buildGhc {
+  "ghc-9_2_1-rc1" = buildGhc {
     version = "9.2.1-alpha1";
-    url = "https://downloads.haskell.org/ghc/9.2.1-alpha1/ghc-9.2.0.20210331-src.tar.xz";
-    sha256 = "sha256:0ska5649fn672w97nwh6xvx4yc1dbik751mxdqgmxl9sq8wk1h18";
+    url = "https://downloads.haskell.org/ghc/9.2.1-rc1/ghc-9.2.0.20210821-src.tar.xz";
+    sha256 = "sha256:1xmkaa58l67lml2f34bvzcckilqr8blqyhs1b0hpkngh26w8q482";
     bootVer = "ghc8101";
   };