diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 3.0.2.1
+
+* Relax upper bound on process
+
 ## 3.0.2
 
 * Don't launch if server fails; kill server on exit [#537](https://github.com/yesodweb/wai/issues/537) [#541](https://github.com/yesodweb/wai/pull/541)
diff --git a/wai-handler-launch.cabal b/wai-handler-launch.cabal
--- a/wai-handler-launch.cabal
+++ b/wai-handler-launch.cabal
@@ -1,5 +1,5 @@
 Name:                wai-handler-launch
-Version:             3.0.2
+Version:             3.0.2.1
 Synopsis:            Launch a web app in the default browser.
 description:         API docs and the README are available at <http://www.stackage.org/package/wai-handler-launch>.
 License:             MIT
@@ -28,7 +28,7 @@
         cpp-options: -DWINDOWS
         extra-libraries: Shell32 msvcrt
     else
-        build-depends: process >= 1.0 && < 1.3
+        build-depends: process >= 1.0 && < 1.5
         if os(darwin)
             cpp-options: -DMAC