diff --git a/lambdacube-gl.cabal b/lambdacube-gl.cabal
index a899a27..6c05a40 100644
--- a/lambdacube-gl.cabal
+++ b/lambdacube-gl.cabal
@@ -34,6 +34,6 @@ library
     binary >=0.7 && <0.8,
     JuicyPixels >=3.2.6.4 && <3.3,
     OpenGLRaw >=3.0 && <3.1, 
-    lambdacube-ir
+    lambdacube-ir == 0.1.*
   hs-source-dirs:      src
   default-language:    Haskell2010