diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index e56f0c37..f6ffd809 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -296,6 +296,12 @@ Cpp-ObjDump:
   - .c++objdump
   - .cxx-objdump
 
+Crystal:
+  type: programming
+  lexer: ruby
+  primary_extension: .cr
+  ace_mode: ruby
+  
 Cucumber:
   lexer: Gherkin
   primary_extension: .feature