diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 504a9cd5..d9c3f4f2 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -2005,6 +2005,7 @@ Slash:
 Slim:
   group: HTML
   type: markup
+  lexer: Slim
   color: "#ff8877"
   extensions:
   - .slim
@@ -2071,6 +2072,7 @@ SuperCollider:
 
 Swift:
   type: programming
+  lexer: Swift
   color: "#ffac45"
   extensions:
   - .swift