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Honor custom CA file path during installation

Aug 20, 2026

Ruby4.10.1

Fixed

Use the CA certificate configured in APPSIGNAL_CA_FILE_PATH to download the AppSignal agent when installing this gem.

The gem downloads the agent from our servers over HTTPS during installation. It always used the CA certificate bundled with the gem to verify that connection, whatever the value of the ca_file_path configuration option. This meant the installation failed behind a proxy that intercepts TLS connections, such as Zscaler, even when APPSIGNAL_CA_FILE_PATH pointed to a CA bundle that trusts the proxy.

The bundled CA certificate is still used when APPSIGNAL_CA_FILE_PATH is not set.

Thanks @Cosmo for your contribution!

View the Ruby gem v4.10.1 changelog for more information.

View all Ruby updates

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