diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index c85fe463..1ff84122 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -2307,6 +2307,9 @@ Tcl:
   - .tcl
   - .adp
   - .tm
+  interpreters:
+  - tclsh
+  - wish
 
 Tcsh:
   type: programming