diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index c91d372a..042bcd4a 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1021,6 +1021,17 @@ Raw token data:
   - raw
   primary_extension: .raw
 
+REALbasic:
+  type: programming
+  color: "#479f47"
+  primary_extension: .rbp
+  extensions:
+  - .rbp
+  - .rbo
+  - .rbvcp
+  - .rbres
+  - .rbbas
+
 Rebol:
   type: programming
   lexer: REBOL