diff --git a/doc/developer/topotests.rst b/doc/developer/topotests.rst
index 52c0361a02..72de7b3bc9 100644
--- a/doc/developer/topotests.rst
+++ b/doc/developer/topotests.rst
@@ -33,6 +33,7 @@ Installing Topotest Requirements
        net-tools \
        python3-pip \
        iputils-ping \
+       iptables \
        tshark \
        valgrind
    python3 -m pip install wheel