diff --git a/cdeps.cabal b/cdeps.cabal
--- a/cdeps.cabal
+++ b/cdeps.cabal
@@ -1,6 +1,6 @@
 cabal-version: 1.18
 name: cdeps
-version: 0.1.0.0
+version: 0.1.0.1
 license: BSD3
 license-file: LICENSE
 copyright: Copyright: (c) 2018 Vanessa McHale
@@ -27,7 +27,6 @@
     description:
         Disable building the executable
     default: False
-    manual: True
 
 library
     exposed-modules:
@@ -37,7 +36,7 @@
     default-language: Haskell2010
     ghc-options: -Wall
     build-depends:
-        base >=4.8 && <5,
+        base >=4.9 && <5,
         text -any,
         bytestring -any,
         array -any,
diff --git a/src/Language/C/Dependency.x b/src/Language/C/Dependency.x
--- a/src/Language/C/Dependency.x
+++ b/src/Language/C/Dependency.x
@@ -121,7 +121,7 @@
     envPath <- fromMaybe mempty <$> lookupEnv "C_INCLUDE_PATH"
     let incl = includes' contents
         dir = takeDirectory src
-        allDirs = dir : incls <> split envPath
-    filterM doesFileExist ((<>) <$> allDirs <*> incl)
+        allDirs = dir : incls ++ split envPath
+    filterM doesFileExist ((++) <$> allDirs <*> incl)
 
 }