diff --git a/linux-appimage/Dockerfile b/linux-appimage/Dockerfile
index c30500f..49c6d7f 100644
--- a/linux-appimage/Dockerfile
+++ b/linux-appimage/Dockerfile
@@ -69,5 +69,7 @@ RUN apt-get install -y \
 # Download tools for building AppImages
 RUN wget https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage
 RUN wget https://github.com/linuxdeploy/linuxdeploy-plugin-qt/releases/download/continuous/linuxdeploy-plugin-qt-x86_64.AppImage
+RUN wget https://github.com/linuxdeploy/linuxdeploy-plugin-checkrt/releases/download/continuous/linuxdeploy-plugin-checkrt-x86_64.sh
 RUN chmod a+x linuxdeploy-x86_64.AppImage
 RUN chmod a+x linuxdeploy-plugin-qt-x86_64.AppImage
+RUN chmod a+x linuxdeploy-plugin-checkrt-x86_64.sh