diff --git a/tensorflow/Dockerfile b/tensorflow/Dockerfile
index c8cc38b8a20455d85cfc0ce1ebb5f082137f6127..eb921ac15005807262ded39cc31bd070ec5b7789 100644
--- a/tensorflow/Dockerfile
+++ b/tensorflow/Dockerfile
@@ -6,7 +6,8 @@ LABEL authors="Moritz Maxeiner <moritz.maxeiner@fu-berlin.de>"
 
 ARG DEBIAN_FRONTEND=noninteractive
 
-RUN apt-get install -y \
+RUN apt-get update && \
+    apt-get install -y \
         openjdk-11-jdk \
         swig \
         libcurl3-dev \