diff --git a/emu/emu_downloads_menu.py b/emu/emu_downloads_menu.py
index 36232d3..5ace94c 100644
--- a/emu/emu_downloads_menu.py
+++ b/emu/emu_downloads_menu.py
@@ -27,15 +27,17 @@
 from emu.utils import download
 from emu.docker_config import DockerConfig
 
+ANDROID_REPOSITORY = os.environ.get("ANDROID_REPOSITORY", "https://dl.google.com").rstrip("/")
+
 SYSIMG_REPOS = [
-    "https://dl.google.com/android/repository/sys-img/android/sys-img2-5.xml",
-    "https://dl.google.com/android/repository/sys-img/google_apis/sys-img2-5.xml",
-    "https://dl.google.com/android/repository/sys-img/google_apis_playstore/sys-img2-5.xml",
-    "https://dl.google.com/android/repository/sys-img/google_atd/sys-img2-5.xml",
-    "https://dl.google.com/android/repository/sys-img/android-tv/sys-img2-5.xml",
+    "%s/android/repository/sys-img/android/sys-img2-5.xml" % ANDROID_REPOSITORY,
+    "%s/android/repository/sys-img/google_apis/sys-img2-5.xml" % ANDROID_REPOSITORY,
+    "%s/android/repository/sys-img/google_apis_playstore/sys-img2-5.xml" % ANDROID_REPOSITORY,
+    "%s/android/repository/sys-img/google_atd/sys-img2-5.xml" % ANDROID_REPOSITORY,
+    "%s/android/repository/sys-img/android-tv/sys-img2-5.xml" % ANDROID_REPOSITORY,
 ]
 
-EMU_REPOS = ["https://dl.google.com/android/repository/repository2-1.xml"]
+EMU_REPOS = ["%s/android/repository/repository2-1.xml" % ANDROID_REPOSITORY]
 
 CHANNEL_MAPPING = {
     "channel-0": "stable",
@@ -193,7 +195,8 @@ def __init__(self, pkg, licenses):
         # the <tag> element is labelled — for 16KB variants the path
         # sort is e.g. google_apis_ps16k, served from .../google_apis/.
         url_dir = sort_base or self.tag
-        self.url = "https://dl.google.com/android/repository/sys-img/%s/%s" % (
+        self.url = "%s/android/repository/sys-img/%s/%s" % (
+            ANDROID_REPOSITORY,
             url_dir,
             self.zip,
         )
@@ -252,7 +255,7 @@ def __init__(self, pkg, licenses):
         for archive in archives:
             url = archive.find(".//url").text
             hostos = archive.find("host-os").text
-            self.urls[hostos] = "https://dl.google.com/android/repository/%s" % url
+            self.urls[hostos] = "%s/android/repository/%s" % (ANDROID_REPOSITORY, url)
 
     def download_name(self):
         return "emulator-{}.zip".format(self.version)
diff --git a/emu/platform_tools.py b/emu/platform_tools.py
index f1dafdf..dd6e001 100644
--- a/emu/platform_tools.py
+++ b/emu/platform_tools.py
@@ -11,18 +11,20 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import os
 import zipfile
 from pathlib import Path
 
 from emu.utils import download
 
+ANDROID_REPOSITORY = os.environ.get("ANDROID_REPOSITORY", "https://dl.google.com").rstrip("/")
 
 class PlatformTools(object):
     """The platform tools zip file. It will be downloaded on demand."""
 
     # Platform tools, needed to get adb.
     PLATFORM_TOOLS_URL = (
-        "https://dl.google.com/android/repository/platform-tools_r29.0.5-linux.zip"
+        '%s/android/repository/platform-tools_r29.0.5-linux.zip' % ANDROID_REPOSITORY
     )
     PLATFORM_TOOLS_ZIP = "platform-tools-latest-linux.zip"