diff --git a/Dockerfile b/Dockerfile
index 152e8c1..57f5fa5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,6 +19,7 @@ RUN apt-get update \
   && apt-add-repository ppa:openjdk-r/ppa \
   && apt-get update \
   && apt-get install -y openjdk-9-jdk \
+      -o Dpkg::Options::="--force-overwrite" \
   && apt-get autoremove -y \
   && apt-get clean \
   && rm -rf /var/lib/apt/lists/*