diff --git a/scripts/requirements.txt b/scripts/requirements.txt
index c4cce9f..e318ca7 100644
--- a/scripts/requirements.txt
+++ b/scripts/requirements.txt
@@ -26,6 +26,9 @@ psycopg2-binary>=2.9.9
 # Email verification (MX lookup + SMTP probe)
 dnspython>=2.6.0
 
+# PDF form filling (MCS-150 official forms)
+pypdf>=4.0.0
+
 # HTTP clients
 aiohttp>=3.9.0
 requests>=2.31.0