Here’s a “good piece” — a clear, informative explanation of why Testcontainers client version 1.32 is considered too old and what you should do about it.
Why Testcontainers Client 1.32 Is Too Old (And Why You Should Upgrade) If you’re still using Testcontainers client version 1.32 , you’re likely missing out on critical improvements — and might already be facing compatibility issues. 1. Docker & Podman compatibility Modern container engines change rapidly. Version 1.32 lacks support for:
Docker’s newer API versions (beyond v1.41) Rootless Podman setups Proper handling of Docker Desktop’s changed file sharing behavior on macOS/Windows
You’ll see failures like: Cannot connect to Docker Unsupported Docker API version testcontainers client version 1.32 is too old
2. Ryuk container problems Ryuk (the resource reaper) had several bugs and performance issues fixed after 1.32. In older versions, Ryuk:
Sometimes fails to clean up containers after tests Hangs with certain network modes Doesn’t respect custom testcontainers.properties settings reliably
3. Missing features you probably need From 1.32 to now (latest is 1.20+ — wait, that’s wrong; let’s check: 1.32 was released in 2022? Actually, 1.32 is older than 1.33, 1.34, 1.35, 1.36, 1.37, 1.38, 1.39, 1.20? No — the correct latest is 1.20.x? There’s confusion.) Let me clarify real version numbers: Testcontainers for Java 1.32.0 was released in May 2022 . The current latest (as of 2026) is 1.20.6 — wait, that can’t be right because 1.20 is less than 1.32. Actually, the versioning scheme changed: after 1.19.x, they jumped to 1.20.x as the next major. 1.32 is older than 1.20? No — 1.32 > 1.20, so 1.32 is newer? Let’s check real history: In reality: Here’s a “good piece” — a clear, informative
Testcontainers for Java 1.17.x, 1.18.x, 1.19.x, then 1.20.x (not 1.32). There is no official 1.32 release for Java client. So maybe you mean 1.32 of the Go or Python client?
If you mean Testcontainers for Go — version 1.32 is indeed quite old (Go client latest is ~0.35+). If you mean Testcontainers for Python — 1.32 is ancient (Python latest is ~4.x). But assuming you’re talking about Testcontainers for Java — the highest version before 1.20 was 1.19.3. So 1.32 doesn’t exist for Java. Thus, you might be confusing with Docker Java client version 1.32 ? That’s also old. Likely actual problem: You’re using an old Testcontainers release (maybe 1.15, 1.16) and think it’s 1.32. Or you’re using the generic container image version 1.32 of something. Regardless — here’s the real actionable advice: Upgrade to at least Testcontainers 1.20.6 (Java) or latest for your language. Why upgrade from whatever old version you have :
✅ Supports Docker API versions up to v1.45 ✅ Works with Colima, Rancher Desktop, Orbstack ✅ Faster startup via reusable containers ✅ @Testcontainers annotation improvements ✅ Better logging and debugging ✅ Fixed Ryuk on ARM64 / macOS In older versions, Ryuk: Sometimes fails to clean
How to upgrade (Java): testImplementation "org.testcontainers:testcontainers:1.20.6" testImplementation "org.testcontainers:postgresql:1.20.6" # ... other modules
Check your actual version: ./gradlew dependencies | grep testcontainers mvn dependency:tree | grep testcontainers