diff --git a/Containerfile.in b/Containerfile.in
index ee4b436..8a420e0 100644
--- a/Containerfile.in
+++ b/Containerfile.in
@@ -29,6 +29,6 @@ ENV KEYCLOAK_ADMIN_PASSWORD="admin"
 EXPOSE 8080
 COPY --chown=root:root tobie-ca.crt /etc/pki/ca-trust/source/anchors/tobie-ca.crt
 USER root
-RUN update-ca-trust
+RUN keytool -importcert -alias tobieca -cacerts -storepass changeit -noprompt -trustcacerts -file /etc/pki/ca-trust/source/anchors/tobie-ca.crt
 USER keycloak
 ENTRYPOINT ["kc.sh", "start", "--optimized", "--http-enabled", "true", "--proxy", "edge", "--log-console-format", "'%-5p [%c] (%t) %s%e%n'", "--hostname-strict-backchannel=true"]