diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 0.2.1.5
+
+* Remove upper bounds
+
 ## 0.2.1.4
 
 * Fix compilation of benchmarks
diff --git a/bzlib-conduit.cabal b/bzlib-conduit.cabal
--- a/bzlib-conduit.cabal
+++ b/bzlib-conduit.cabal
@@ -1,5 +1,5 @@
 name:                bzlib-conduit
-version:             0.2.1.4
+version:             0.2.1.5
 synopsis:            Streaming compression/decompression via conduits.
 description:         Streaming compression/decompression via conduits.
 homepage:            https://github.com/snoyberg/bzlib-conduit
@@ -25,10 +25,10 @@
   other-modules:       Data.Conduit.BZlib.Internal
 
   build-depends:       base == 4.*
-                     , bytestring >=0.9 && <0.11
-                     , mtl == 2.*
-                     , conduit >= 0.5 && < 1.3
-                     , conduit-extra >= 1.0 && < 1.2
+                     , bytestring >=0.9
+                     , mtl >= 2.0
+                     , conduit >= 0.5
+                     , conduit-extra >= 1.0
                      , resourcet
                      , data-default
                      , bindings-DSL