diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index c5eb9e6a..d352be07 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -3355,6 +3355,12 @@ Squirrel:
   tm_scope: source.c++
   ace_mode: c_cpp
 
+Stan:
+  type: programming
+  extensions:
+  - .stan
+  ace_mode: text
+
 Standard ML:
   type: programming
   color: "#dc566d"