diff --git a/setup.py b/setup.py
index a91f7b4..ca4fc95 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,9 @@
         setup_requires=['setuptools_scm'],
         install_requires=[
             "fs~=2.0",
-            "google-cloud-storage~=1.0"
+            "google-cloud-storage~=1.0",
+            "urllib3~=1.25",
+            "packaging~=20.0"
         ],
         entry_points={
             "fs.opener": [