diff --git a/lib/SwiftSyntax/CMakeLists.txt b/lib/SwiftSyntax/CMakeLists.txt
index bb06b789a61b5..ba44c2fde55ef 100644
--- a/lib/SwiftSyntax/CMakeLists.txt
+++ b/lib/SwiftSyntax/CMakeLists.txt
@@ -50,6 +50,7 @@ set(SWIFT_SYNTAX_MODULES
   # Support for LSP
   SwiftIDEUtils
   SwiftRefactor
+  SwiftLexicalLookup
   # For swift-plugin-server
   SwiftLibraryPluginProvider
 )