diff --git a/Dockerfile b/Dockerfile
index 54c543e..324e9af 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -90,7 +90,7 @@ RUN cd /tmp && wget http://ftp.plusline.de/FreeBSD/releases/amd64/14.0-RELEASE/b
     && rm -f /tmp/base.txz
 
 # Install cppcheck
-RUN v=2.13 \
+RUN v=2.13.0 \
     && cd /tmp \
     && wget -O cppcheck-$v.tar.gz https://github.com/danmar/cppcheck/archive/$v.tar.gz \
     && tar -xf cppcheck-$v.tar.gz \