diff --git a/assets/syntaxes/Cabal.sublime-syntax b/assets/syntaxes/Cabal.sublime-syntax
index b6e0dac2..ff40ba4b 100644
--- a/assets/syntaxes/Cabal.sublime-syntax
+++ b/assets/syntaxes/Cabal.sublime-syntax
@@ -33,7 +33,7 @@ contexts:
       captures:
         1: constant.other.cabal
         2: punctuation.entity.cabal
-    - match: '^(?i)(executable|library|test-suite|benchmark|flag|source-repository)\s+([^\s,]+)\s*$'
+    - match: '^(?i)(executable|library|test-suite|benchmark|flag|source-repository|custom-setup)\s+([^\s,]+)\s*$'
       scope: entity.cabal
       captures:
         1: keyword.entity.cabal