diff --git a/Dockerfile.rhel8 b/Dockerfile.rhel8
index 784a686..944aa43 100644
--- a/Dockerfile.rhel8
+++ b/Dockerfile.rhel8
@@ -49,6 +49,9 @@ RUN vcs import src < ros-controls.rhel8.repos && \
 # add default.yaml to the image
 ADD defaults.yaml /root/.colcon/defaults.yaml
 
+# there is no python3-graphviz on rhel8, so install it via pip 
+RUN pip3 install graphviz
+
 # set up sourcing of ros
 COPY ./ros_entrypoint.sh /
 ENTRYPOINT [ "/ros_entrypoint.sh" ]
diff --git a/Dockerfile.rhel9 b/Dockerfile.rhel9
index 74e5de4..90e224a 100644
--- a/Dockerfile.rhel9
+++ b/Dockerfile.rhel9
@@ -78,6 +78,9 @@ RUN vcs import src < ros-controls.rhel9.repos && \
 # add default.yaml to the image
 ADD defaults.yaml /root/.colcon/defaults.yaml
 
+# there is no python3-graphviz on rhel9, so install it via pip 
+RUN pip3 install graphviz
+
 # set up sourcing of ros
 COPY ./ros_entrypoint.sh /
 ENTRYPOINT [ "/ros_entrypoint.sh" ]