diff --git a/identify/extensions.py b/identify/extensions.py
index fd63678..35dd8d9 100644
--- a/identify/extensions.py
+++ b/identify/extensions.py
@@ -93,6 +93,7 @@
     'ggb': {'binary', 'zip', 'ggb'},
     'gif': {'binary', 'image', 'gif'},
     'gleam': {'text', 'gleam'},
+    'glsl': {'text', 'comp', 'frag', 'geom', 'tesc', 'tese', 'vert'},
     'go': {'text', 'go'},
     'gotmpl': {'text', 'gotmpl'},
     'gpx': {'text', 'gpx', 'xml'},