diff --git a/openwrt/openwrt/env/Dockerfile.openwrt-env b/openwrt/openwrt/env/Dockerfile.openwrt-env
index 5d909d2..b92ae6b 100644
--- a/openwrt/openwrt/env/Dockerfile.openwrt-env
+++ b/openwrt/openwrt/env/Dockerfile.openwrt-env
@@ -7,6 +7,7 @@ RUN lscpu && \
     apt install -y -qq build-essential clang flex bison g++ gawk \
                 gcc-multilib g++-multilib gettext git libncurses-dev libssl-dev \
                 python3-distutils rsync unzip zlib1g-dev file wget \
+		python3-dev \
                 python3-setuptools libelf-dev python3-pyelftools swig \
                 screenfetch tree && \
     apt clean > /dev/null && \