1 files changed, 2 insertions, 2 deletions
diff --git a/xmobar.cabal b/xmobar.cabal
index 71ea524..3b235bb 100644
--- a/xmobar.cabal
+++ b/xmobar.cabal
@@ -112,9 +112,9 @@ executable xmobar
       time,
       filepath,
       X11 == 1.6.*,
-      mtl == 2.0.*,
+      mtl >= 2.0 && < 2.2,
       parsec == 3.1.*,
-      stm == 2.3.*
+      stm >= 2.3 && <2.5
 
     if flag(small_base)
        build-depends: