diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 01f4b4cd..f0203b39 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1366,6 +1366,12 @@ Prolog:
   - .ecl
   - .pl
 
+Propeller Spin:
+  type: programming
+  lexer: Text only
+  color: "#2b446d"
+  primary_extension: .spin
+
 Protocol Buffer:
   type: markup
   aliases: