diff --git a/projects/filelock/Dockerfile b/projects/filelock/Dockerfile
index 2cd477890..5849ef897 100644
--- a/projects/filelock/Dockerfile
+++ b/projects/filelock/Dockerfile
@@ -16,6 +16,7 @@
 
 FROM gcr.io/oss-fuzz-base/base-builder-python
 RUN apt-get update && apt-get install -y make autoconf automake libtool
+RUN python3 -m pip install --upgrade pip
 RUN git clone --depth 1 https://github.com/tox-dev/py-filelock filelock
 WORKDIR filelock
 COPY build.sh *.py $SRC/