diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 05ba1cd4..0b2e7399 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -810,6 +810,8 @@ Erlang:
   - .escript
   - .hrl
   ace_mode: erlang
+  interpreters:
+  - escript
 
 F#:
   type: programming
@@ -895,6 +897,7 @@ Forth:
   - .for
   - .forth
   - .frt
+  - .fs
   ace_mode: forth
 
 Frege: