diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 1cdb51f5..7d39c8b5 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -28,6 +28,7 @@ Example entry:
 * `apiKey` - _the API uses a private key string/token for authentication - try and use the correct parameter_
 * `X-Mashape-Key` - _the name of the header which may need to be sent_
 * `No` - _the API requires no authentication to run_
+* `User-Agent` - _the name of the header to be sent with requests to the API_
 
 \* Currently, the only accepted inputs for the `CORS` field are as follows:
 
diff --git a/build/validate_format.py b/build/validate_format.py
index 545fea2c..4610f379 100755
--- a/build/validate_format.py
+++ b/build/validate_format.py
@@ -5,7 +5,7 @@ import sys
 
 anchor = '###'
 min_entries_per_section = 3
-auth_keys = ['apiKey', 'OAuth', 'X-Mashape-Key', 'No']
+auth_keys = ['apiKey', 'OAuth', 'X-Mashape-Key', 'No', 'User-Agent']
 punctuation = ['.', '?', '!']
 https_keys = ['Yes', 'No']
 cors_keys = ['Yes', 'No', 'Unknown']