diff --git a/requirements.txt b/requirements.txt
index bdf27618..86d03afa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -54,5 +54,7 @@ jinja2-time
 # https://github.com/dgtlmoon/changedetection.io/pull/1009
 jq~=1.3 ;python_version >= "3.8" and sys_platform == "linux"
 
+# Any current modern version, required so far for screenshot PNG->JPEG conversion but will be used more in the future
+pillow
 # playwright is installed at Dockerfile build time because it's not available on all platforms