diff --git a/.github/workflows/real-browser.yml b/.github/workflows/real-browser.yml
index ff3b49ea65..fc44a5bb9d 100644
--- a/.github/workflows/real-browser.yml
+++ b/.github/workflows/real-browser.yml
@@ -48,7 +48,8 @@ jobs:
       - uses: ./.github/actions/portable-build-cache
         with:
           build_cache_artifact: ${{ inputs.build_cache_artifact }}
-      - run: npm run verify:browser
+      # Own a fresh bus so Chromium never depends on an inherited session address.
+      - run: dbus-run-session -- npm run verify:browser
         env:
           REA_BROWSER_EXECUTABLE: /usr/bin/google-chrome
           REA_BROWSER_NO_SANDBOX: "true"
diff --git a/.github/workflows/real-web-runtime.yml b/.github/workflows/real-web-runtime.yml
index b5da11ae15..1303e02f89 100644
--- a/.github/workflows/real-web-runtime.yml
+++ b/.github/workflows/real-web-runtime.yml
@@ -44,7 +44,8 @@ jobs:
       - uses: ./.github/actions/portable-build-cache
         with:
           build_cache_artifact: ${{ inputs.build_cache_artifact }}
-      - run: env -u DBUS_SESSION_BUS_ADDRESS npm run verify:browser:runtime
+      # Own a fresh bus so Chromium never depends on an inherited session address.
+      - run: dbus-run-session -- npm run verify:browser:runtime
         env:
           REA_BROWSER_EXECUTABLE: /usr/bin/google-chrome
           REA_BROWSER_NO_SANDBOX: "true"
diff --git a/.github/workflows/real-web-source-map.yml b/.github/workflows/real-web-source-map.yml
index 1b7c3c7d15..8ddbab8823 100644
--- a/.github/workflows/real-web-source-map.yml
+++ b/.github/workflows/real-web-source-map.yml
@@ -46,7 +46,8 @@ jobs:
           build_cache_artifact: ${{ inputs.build_cache_artifact }}
       - name: Install the pinned compiler into an isolated fixture directory
         run: npm install --prefix "$RUNNER_TEMP/rea-web-source-map-compiler" --no-audit --no-fund --package-lock=false esbuild@0.25.10
-      - run: npm run verify:browser:source-maps
+      # Own a fresh bus so Chromium never depends on an inherited session address.
+      - run: dbus-run-session -- npm run verify:browser:source-maps
         env:
           # Retain browser launch argv/PID/stderr in the verifier's captured
           # CLI failure diagnostics without changing its deadline or retrying.