diff --git a/default.nix b/default.nix
index 2b2ebc1..abe4241 100644
--- a/default.nix
+++ b/default.nix
@@ -8,8 +8,8 @@ let
   rustcSrc = pkgs.fetchgit {
     url = https://github.com/rust-lang/rust.git;
     # master of 2020-04-25
-    rev = "94d346360da50f159e0dc777dc9bc3c5b6b51a00";
-    sha256 = "14b15521c52549ebbb113173b4abecd124b5a823";
+    rev = "14b15521c52549ebbb113173b4abecd124b5a823";
+    sha256 = "0a6bi8g636cajpdrpcfkpza95b7ss7041m9cs6hxcd7h8bf6xhwi";
     fetchSubmodules = true;
   };
   targets = [];