diff --git a/packaging/linux/flatpak/ai.storyteller.vectorcraft.bundle.yml b/packaging/linux/flatpak/ai.storyteller.vectorcraft.bundle.yml
index 36ab122d7..b245e0b31 100644
--- a/packaging/linux/flatpak/ai.storyteller.vectorcraft.bundle.yml
+++ b/packaging/linux/flatpak/ai.storyteller.vectorcraft.bundle.yml
@@ -28,9 +28,13 @@ finish-args:
   # portal, so broad filesystem access isn't needed. Pictures is granted for opening files by
   # path from the command line.
   - --filesystem=xdg-pictures
+  # Font managers (FontBase and others) activate fonts into ~/.fonts, which Flatpak does not open
+  # to a sandbox: it exposes /usr/share/fonts and ~/.local/share/fonts, and nothing else. Without
+  # this the font list holds none of the activated families, while native apps see them.
+  - --filesystem=~/.fonts:ro
   # Deliberately not granted: network (the optional --control server listens on 127.0.0.1 in
   # the sandbox; `flatpak override --user --share=network ai.storyteller.vectorcraft` exposes it
-  # to host agents) and home/host filesystem access.
+  # to host agents) and home/host filesystem access beyond the read-only folders above.
 modules:
   - name: vectorcraft
     buildsystem: simple
diff --git a/packaging/linux/flatpak/ai.storyteller.vectorcraft.yml b/packaging/linux/flatpak/ai.storyteller.vectorcraft.yml
index 919531523..865609509 100644
--- a/packaging/linux/flatpak/ai.storyteller.vectorcraft.yml
+++ b/packaging/linux/flatpak/ai.storyteller.vectorcraft.yml
@@ -26,6 +26,7 @@ finish-args:
   # portal, so broad filesystem access isn't needed. Pictures is granted for opening files by
   # path from the command line.
   - --filesystem=xdg-pictures
+  - --filesystem=~/.fonts:ro
 build-options:
   append-path: /usr/lib/sdk/rust-stable/bin
 modules: