flatpak-mask

Mask a flatpak to ignore updates

$ flatpak mask [com.example.app]

$ flatpak mask --remove [com.example.app]

$ flatpak mask --user

$ flatpak mask --system

$ flatpak mask app/org.domain.*

$ flatpak mask [com.example.app]//unstable

flatpak mask [options] [pattern...]

Flatpak mask prevents specified applications or extensions from being updated or automatically installed. A masked ref will never receive updates, and masked extensions marked for auto-download will not be downloaded.
Patterns support wildcards using \* to match content within ref sections. You can mask specific applications, entire domains, architecture-specific builds, or particular branches.
Running the command without patterns lists all current masks for the specified installation (user or system).

--remove

Remove specified mask patterns instead of adding them

Apply mask to per-user installation

Apply mask to default system-wide installation

Target a specific named system installation

Output debug information during processing

Display help and exit

Masking prevents all updates including security patches. Use sparingly and remember to unmask applications when you want to receive updates again. Masks are stored separately for user and system installations.

The mask feature was added to Flatpak to give users control over automatic updates, particularly useful for pinning specific versions or avoiding problematic releases. Flatpak itself was developed by Alexander Larsson at Red Hat, evolving from the xdg-app project around 2015.

flatpak(1), flatpak-update(1), flatpak-install(1)