diff --git a/ShellCheck/Parser.hs b/ShellCheck/Parser.hs
index 0c02222..f06a51e 100644
--- a/ShellCheck/Parser.hs
+++ b/ShellCheck/Parser.hs
@@ -17,7 +17,7 @@
     yOU should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 -}
-{-# LANGUAGE NoMonomorphismRestriction, TemplateHaskell #-}
+{-# LANGUAGE NoMonomorphismRestriction, TemplateHaskell, FlexibleContexts #-}
 module ShellCheck.Parser (parseScript, runTests) where
 
 import ShellCheck.AST