diff --git a/requirements.txt b/requirements.txt
index 0720f1f..a2047fd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -114,7 +114,7 @@ PyYAML==5.4
 rdflib==4.2.2
 readme-renderer==24.0
 regex==2020.5.13
-reportlab==3.4.0
+reportlab==3.5.55
 requests==2.22.0
 requests-toolbelt==0.9.1
 requests-unixsocket==0.1.5