diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Revision history for sensu-run
 
+## 0.6.0.3 -- 2018-11-06
+
+* Relax upper version bound for base
+
 ## 0.6.0.2 -- 2018-09-12
 
 * Add source-repository stanza in the cabal file
diff --git a/sensu-run.cabal b/sensu-run.cabal
--- a/sensu-run.cabal
+++ b/sensu-run.cabal
@@ -1,5 +1,5 @@
 name: sensu-run
-version: 0.6.0.2
+version: 0.6.0.3
 synopsis: A tool to send command execution results to Sensu
 description:
   @sensu-run@ is a command line tool to send command execution results to Sensu
@@ -27,7 +27,7 @@
   build-depends:
       aeson >= 0.11 && < 1.5
     , async < 2.3
-    , base >= 4.9 && < 4.12
+    , base >= 4.9 && < 4.13
     , bytestring >= 0.10 && < 0.11
     , directory < 1.4
     , filelock < 0.2