diff --git a/.github/workflows/mantis-telegram-desktop-proof.yml b/.github/workflows/mantis-telegram-desktop-proof.yml
index 734a13f0dab..afdd496e011 100644
--- a/.github/workflows/mantis-telegram-desktop-proof.yml
+++ b/.github/workflows/mantis-telegram-desktop-proof.yml
@@ -338,10 +338,14 @@ jobs:
           test -f scripts/e2e/telegram-user-driver.py
           media_tools="${RUNNER_TEMP}/mantis-media-tools"
           install -d "$media_tools"
-          printf '%s\n' '{"private":true}' > "$media_tools/package.json"
-          pnpm --dir "$media_tools" --config.dangerouslyAllowAllBuilds=true add ffmpeg-static@5.2.0 ffprobe-static@3.1.0
-          sudo install -m 0755 "$media_tools/node_modules/ffmpeg-static/ffmpeg" /usr/local/bin/ffmpeg
-          sudo install -m 0755 "$media_tools/node_modules/ffprobe-static/bin/linux/x64/ffprobe" /usr/local/bin/ffprobe
+          curl --fail --location --retry 3 --retry-delay 2 \
+            --connect-timeout 15 --max-time 180 \
+            https://github.com/BtbN/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-linux64-gpl.tar.xz \
+            --output "$media_tools/ffmpeg.tar.xz"
+          tar -xJf "$media_tools/ffmpeg.tar.xz" -C "$media_tools"
+          bin_dir="$(find "$media_tools" -type d -path '*/bin' | head -n 1)"
+          sudo install -m 0755 "$bin_dir/ffmpeg" /usr/local/bin/ffmpeg
+          sudo install -m 0755 "$bin_dir/ffprobe" /usr/local/bin/ffprobe
           ffmpeg -version >/dev/null
           ffprobe -version >/dev/null
 
diff --git a/test/scripts/mantis-telegram-desktop-proof-workflow.test.ts b/test/scripts/mantis-telegram-desktop-proof-workflow.test.ts
index d851f9ea6d0..a1a9a4448c2 100644
--- a/test/scripts/mantis-telegram-desktop-proof-workflow.test.ts
+++ b/test/scripts/mantis-telegram-desktop-proof-workflow.test.ts
@@ -43,8 +43,8 @@ describe("Mantis Telegram Desktop proof workflow", () => {
   it("installs local proof tools before the Codex agent runs", () => {
     const install = workflowStep("Install local proof tools");
     expect(install.run).toContain("test -f scripts/e2e/telegram-user-driver.py");
-    expect(install.run).toContain("ffmpeg-static@5.2.0");
-    expect(install.run).toContain("ffprobe-static@3.1.0");
+    expect(install.run).toContain("BtbN/FFmpeg-Builds");
+    expect(install.run).toContain("ffmpeg-master-latest-linux64-gpl.tar.xz");
     expect(install.run).toContain("/usr/local/bin/ffmpeg");
     expect(install.run).toContain("/usr/local/bin/ffprobe");
     expect(install.run).not.toContain("apt-get install");