diff --git a/.gitignore b/.gitignore
index 1d9773a..a537cdd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -152,6 +152,8 @@
 third_party/opensource-apps/rover-android.tar.gz
 third_party/opensource-apps/santa-tracker
 third_party/opensource-apps/santa-tracker.tar.gz
+third_party/opensource-apps/signal-android
+third_party/opensource-apps/signal-android.tar.gz
 third_party/opensource-apps/sunflower
 third_party/opensource-apps/sunflower.tar.gz
 third_party/opensource-apps/wikipedia
diff --git a/third_party/opensource-apps/signal-android.tar.gz.sha1 b/third_party/opensource-apps/signal-android.tar.gz.sha1
new file mode 100644
index 0000000..131500f
--- /dev/null
+++ b/third_party/opensource-apps/signal-android.tar.gz.sha1
@@ -0,0 +1 @@
+2dbd3f913897b4ec9e25598d783579dbb74fab24
\ No newline at end of file
diff --git a/tools/run_on_app_dump.py b/tools/run_on_app_dump.py
index c6e2552..6a0556c 100755
--- a/tools/run_on_app_dump.py
+++ b/tools/run_on_app_dump.py
@@ -234,6 +234,19 @@
     'folder': 'santa-tracker',
   }),
   App({
+    'id': 'org.thoughtcrime.securesms',
+    'name': 'Signal',
+    'dump_app': 'dump_app.zip',
+    'apk_app': 'Signal-Android-play-prod-universal-release-4.76.2.apk',
+    # TODO(b/172812839): Instrumentation test fails.
+    'id_test': 'org.thoughtcrime.securesms.test',
+    'dump_test': 'dump_test.zip',
+    'apk_test': 'Signal-Android-play-prod-release-androidTest.apk',
+    'url': 'https://github.com/signalapp/Signal-Android',
+    'revision': '91ca19f294362ccee2c2b43c247eba228e2b30a1',
+    'folder': 'signal-android',
+  }),
+  App({
     'id': 'org.wikipedia',
     'name': 'Wikipedia',
     'dump_app': 'dump_app.zip',