diff --git a/ShellCheck.cabal b/ShellCheck.cabal
index 71eb62638..f6070a701 100644
--- a/ShellCheck.cabal
+++ b/ShellCheck.cabal
@@ -139,6 +139,7 @@ executable shellcheck-dev
       base,
       containers,
       ShellCheck
+    default-language: Haskell2010
     main-is: shellcheck-dev.hs
 
 test-suite test-shellcheck