diff --git a/resource-managers/kubernetes/docker/src/main/dockerfiles/spark/bindings/R/Dockerfile b/resource-managers/kubernetes/docker/src/main/dockerfiles/spark/bindings/R/Dockerfile
index f63f2d0d58e22..2dd4d8c4d1e95 100644
--- a/resource-managers/kubernetes/docker/src/main/dockerfiles/spark/bindings/R/Dockerfile
+++ b/resource-managers/kubernetes/docker/src/main/dockerfiles/spark/bindings/R/Dockerfile
@@ -27,8 +27,9 @@ RUN mkdir ${SPARK_HOME}/R
 
 # Install R 3.6.3 (http://cloud.r-project.org/bin/linux/debian/)
 RUN \
-  echo "deb http://cloud.r-project.org/bin/linux/debian buster-cran35/" >> /etc/apt/sources.list && \
+  apt-get update && \
   apt install -y gnupg && \
+  echo "deb http://cloud.r-project.org/bin/linux/debian buster-cran35/" >> /etc/apt/sources.list && \
   (apt-key adv --keyserver keys.gnupg.net --recv-key 'E19F5F87128899B192B1A2C2AD5F960A256A04AF' || apt-key adv --keyserver keys.openpgp.org --recv-key 'E19F5F87128899B192B1A2C2AD5F960A256A04AF') && \
   apt-get update && \
   apt install -y -t buster-cran35 r-base r-base-dev && \