diff --git a/Dockerfile b/Dockerfile
index eb226ed..3e7ed8d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,7 +20,7 @@ RUN \
 RUN \
     set -eux && \
     pip3 --version && \
-    pip3 install --upgrade pip && \
+    easy_install -U pip && \
     pip3 --version && \
     pip3 install --upgrade pip setuptools wheel && \
     pip3 --version && \