diff --git a/scripts/build-desktop-artifact.test.ts b/scripts/build-desktop-artifact.test.ts
index aa733d53163148c5889f9ce39df7c27ab5634f32..4b9294e16887c33db0015fe6c6979a81869b7aea 100644
--- a/scripts/build-desktop-artifact.test.ts
+++ b/scripts/build-desktop-artifact.test.ts
@@ -684,6 +684,9 @@ it.layer(NodeServices.layer)("build-desktop-artifact", (it) => {
       assert.deepStrictEqual((linux.linux as Record<string, unknown>).protocols, [
         { name: "T3 Code", schemes: ["t3code", "t3code-dev"] },
       ]);
+      assert.deepStrictEqual(linux.toolsets, { appimage: "1.0.3" });
+      assert.notProperty(mac, "toolsets");
+      assert.notProperty(win, "toolsets");
       assert.deepStrictEqual(mac.files, [...DESKTOP_FILE_EXCLUSIONS, ...MAC_FILE_EXCLUSIONS]);
       assert.deepStrictEqual(linux.files, [...DESKTOP_FILE_EXCLUSIONS, ...LINUX_FILE_EXCLUSIONS]);
       assert.deepStrictEqual(win.files, DESKTOP_FILE_EXCLUSIONS);
diff --git a/scripts/build-desktop-artifact.ts b/scripts/build-desktop-artifact.ts
index f8f5a6ca2d52dd37c7ec1677eda7ee1dc51b5455..6bf280469c695933de2a38206a608848ba4fec66 100644
--- a/scripts/build-desktop-artifact.ts
+++ b/scripts/build-desktop-artifact.ts
@@ -2762,6 +2762,10 @@ export const createBuildConfig = Effect.fn("createBuildConfig")(function* (
   }
 
   if (platform === "linux") {
+    // electron-builder 26 defaults to its legacy AppImage runtime, which
+    // dynamically loads the system libfuse2 library. Pin the static runtime so
+    // the AppImage also launches on distributions that only provide FUSE 3.
+    buildConfig.toolsets = { appimage: "1.0.3" };
     buildConfig.linux = {
       // The .deb is built from the same unpacked app after the AppImage.
       // electron-builder lists both in latest-linux.yml and writes