diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 1.5.2.6
+
+* Drop an upper bound
+
 ## 1.5.2.5
 
 * Support for `add-handler` when modules are in `src/` directory [#1413](https://github.com/yesodweb/yesod/issues/1413)
diff --git a/yesod-bin.cabal b/yesod-bin.cabal
--- a/yesod-bin.cabal
+++ b/yesod-bin.cabal
@@ -1,5 +1,5 @@
 name:            yesod-bin
-version:         1.5.2.5
+version:         1.5.2.6
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -33,7 +33,7 @@
                      , template-haskell
                      , directory          >= 1.2.1
                      , Cabal              >= 1.18
-                     , unix-compat        >= 0.2          && < 0.5
+                     , unix-compat        >= 0.2
                      , containers         >= 0.2
                      , attoparsec         >= 0.10
                      , http-types         >= 0.7
