diff --git a/runbot/data/Dockerfile b/runbot/data/Dockerfile
index bcec2d65..22797292 100644
--- a/runbot/data/Dockerfile
+++ b/runbot/data/Dockerfile
@@ -99,5 +99,5 @@ ADD https://raw.githubusercontent.com/odoo/odoo/master/requirements.txt /root/p3
 ADD https://raw.githubusercontent.com/odoo/odoo/10.0/requirements.txt /root/p2-requirements.txt
 RUN pip install --no-cache-dir -r /root/p2-requirements.txt coverage flanker==0.4.38 pylint==1.7.2 phonenumbers redis \
     && pip3 install --no-cache-dir -r /root/p3-requirements.txt coverage==4.5.4 websocket-client astroid==2.0.4 \
-    pylint==1.7.2 phonenumbers pyCrypto dbfread==2.0.7 firebase-admin==2.17.0 flamegraph pdfminer.six==20181108 \
+    pylint==1.7.2 phonenumbers pyCrypto dbfread==2.0.7 firebase-admin==2.17.0 flamegraph pdfminer.six==20200720 \
     pdf417gen==0.7.1