diff --git a/identify/extensions.py b/identify/extensions.py
index b0979ba..3cd1ab2 100644
--- a/identify/extensions.py
+++ b/identify/extensions.py
@@ -99,6 +99,7 @@
     'js': {'text', 'javascript'},
     'json': {'text', 'json'},
     'jsonnet': {'text', 'jsonnet'},
+    'json5': {'text', 'json5'},
     'jsx': {'text', 'jsx'},
     'key': {'text', 'pem'},
     'kml': {'text', 'kml', 'xml'},