The Problem

If you see this warning when running ollama --version, smth like:

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ollama version is 0.9.2
Warning: client version is 0.10.1

Your Ollama client and server are running different versions.

Root Cause

Brew upgraded the Ollama binary but the background service is still running the old server version. The brew services daemon continues using the cached older version.

Solution (for Mac)

Step 1: Stop All Ollama Processes

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# stop brew service
brew services stop ollama

# kill any remaining processes
sudo kill $(pgrep ollama)

# verify nothing is running
pgrep ollama

Step 2: Reinstall and Restart

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# reinstall to ensure clean state
brew reinstall ollama

# start service with new version
brew services start ollama

# verify versions match
ollama --version

Why This Works

• brew services stop stops the daemon but doesn’t always kill the process
• pgrep ollama finds process IDs for any running Ollama instances
• brew reinstall ensures the service uses the latest binary
• Fresh service start loads the correct version

This approach completely resets Ollama’s state and eliminates version conflicts between client and server.