diff --git a/syb-extras.cabal b/syb-extras.cabal
--- a/syb-extras.cabal
+++ b/syb-extras.cabal
@@ -1,6 +1,6 @@
 name:          syb-extras
 category:      Polymorphism, Combinators, Generic
-version:       0.2.4
+version:       0.2.4.1
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -27,8 +27,8 @@
 library
   build-depends:
     base           >= 4 && < 5,
-    prelude-extras >= 0.1,
-    eq             >= 3
+    prelude-extras >= 0.1 && < 1,
+    eq             >= 3 && < 4
 
   extensions: CPP