diff --git a/contrib/docker/Dockerfile b/contrib/docker/Dockerfile
index 4c814abd..1e1649ba 100755
--- a/contrib/docker/Dockerfile
+++ b/contrib/docker/Dockerfile
@@ -45,7 +45,8 @@ COPY --from=build /build/ebusd-*_mqtt1.deb ebusd.deb
 
 RUN dpkg -i "--path-exclude=/etc/default/*" "--path-exclude=/etc/init.d/*" "--path-exclude=/lib/systemd/*" ebusd.deb \
     && ebusd -V \
-    && rm -f ebusd.deb
+    && rm -f ebusd.deb \
+    && update-ca-certificates
 
 EXPOSE 8888
 
diff --git a/contrib/docker/Dockerfile.release b/contrib/docker/Dockerfile.release
index 3086ef82..1262a6fc 100644
--- a/contrib/docker/Dockerfile.release
+++ b/contrib/docker/Dockerfile.release
@@ -45,7 +45,8 @@ ADD https://github.com/john30/ebusd/releases/download/v${EBUSD_VERSION}/ebusd-${
 
 RUN dpkg -i "--path-exclude=/etc/default/*" "--path-exclude=/etc/init.d/*" "--path-exclude=/lib/systemd/*" ebusd.deb \
     && ebusd -V \
-    && rm -f ebusd.deb
+    && rm -f ebusd.deb \
+    && update-ca-certificates
 
 EXPOSE 8888
 
diff --git a/contrib/docker/Dockerfile.template b/contrib/docker/Dockerfile.template
index a2770bd9..ed836b7f 100644
--- a/contrib/docker/Dockerfile.template
+++ b/contrib/docker/Dockerfile.template
@@ -45,7 +45,8 @@ LABEL version="${EBUSD_VERSION}-${EBUSD_ARCH}%EBUSD_VERSION_VARIANT%"
 
 RUN dpkg -i "--path-exclude=/etc/default/*" "--path-exclude=/etc/init.d/*" "--path-exclude=/lib/systemd/*" ebusd.deb \
     && ebusd -V \
-    && rm -f ebusd.deb
+    && rm -f ebusd.deb \
+    && update-ca-certificates
 
 EXPOSE 8888