diff --git a/nominatim-3.5/Dockerfile b/nominatim-3.5/Dockerfile
index 3c0c2fdfec077cef0efa527525aadaba35276231..d00855c526864c1d245f47675ae676030239fea9 100644
--- a/nominatim-3.5/Dockerfile
+++ b/nominatim-3.5/Dockerfile
@@ -27,6 +27,7 @@ RUN echo "host all  all    0.0.0.0/0  trust" >> /etc/postgresql/12/main/pg_hba.c
     echo "listen_addresses='*'" >> /etc/postgresql/12/main/postgresql.conf
 
 # Osmium install to run continuous updates
+RUN pip install --upgrade pip
 RUN pip3 install osmium
 
 # Nominatim install