diff --git a/pkgs/development/compilers/ghcjs-ng/default.nix b/pkgs/development/compilers/ghcjs-ng/default.nix
index 92211042acd9..025d74bcda04 100644
--- a/pkgs/development/compilers/ghcjs-ng/default.nix
+++ b/pkgs/development/compilers/ghcjs-ng/default.nix
@@ -42,6 +42,7 @@ let
     targetPrefix = "";
     inherit bootGhcjs;
     inherit (bootGhcjs) version;
+    ghcVersion = bootPkgs.ghc.version;
     isGhcjs = true;
 
     enableShared = true;
diff --git a/pkgs/development/compilers/ghcjs/base.nix b/pkgs/development/compilers/ghcjs/base.nix
index 34c332d87d91..93e6a47934fc 100644
--- a/pkgs/development/compilers/ghcjs/base.nix
+++ b/pkgs/development/compilers/ghcjs/base.nix
@@ -133,6 +133,7 @@ in mkDerivation (rec {
   '';
   passthru = {
     inherit bootPkgs;
+    ghcVersion = ghc.version;
     isCross = true;
     isGhcjs = true;
     inherit nodejs ghcjsBoot;