diff --git a/oeis.cabal b/oeis.cabal
--- a/oeis.cabal
+++ b/oeis.cabal
@@ -1,5 +1,5 @@
 Name:                oeis
-Version:             0.2.1
+Version:             0.2.2
 Stability:           experimental
 
 Author:              Brent Yorgey
@@ -14,8 +14,7 @@
 
 data-files:          README, example/Catalan.hs
 
-Build-Depends:       base, network, HTTP >= 4000.0.2
+Build-Depends:       base <5, network <2.3, HTTP >= 4000.0.2 && <4000.1
 Build-Type:          Simple
 
 Exposed-Modules:     Math.OEIS
-ghc-options:         -Wall