Identify which "parent" library is pulling in the old client.
./gradlew dependencies | grep testcontainers mvn dependency:tree | grep testcontainers testcontainers client version 1.32 is too old
The most frequent culprit is an outdated entry in your build configuration file. You must manually bump the version to the latest stable release (currently in the 1.20.x range for many languages). For Java (Maven) Identify which "parent" library is pulling in the old client