diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index f478e0fb..f124627c 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -688,10 +688,13 @@ GLSL:
   extensions:
   - .fp
   - .frag
+  - .fshader
   - .geom
   - .glslv
+  - .gshader
   - .shader
   - .vert
+  - .vshader
 
 Genshi:
   primary_extension: .kid