diff --git a/docker/Dockerfile.nvim-python3 b/docker/Dockerfile.nvim-python3
index 350e3fdf6..294116b76 100644
--- a/docker/Dockerfile.nvim-python3
+++ b/docker/Dockerfile.nvim-python3
@@ -4,7 +4,7 @@ ENV DEBIAN_URL "http://ftp.us.debian.org/debian"
 
 RUN echo "deb $DEBIAN_URL testing main contrib non-free" >> /etc/apt/sources.list \
   && apt-get update                                             \
-  && apt-get install -y                                         \
+  && apt-get install -y --allow-unauthenticated                 \
     autoconf                                                    \
     automake                                                    \
     cmake                                                       \