diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 4fefe6c27..ffba1f084 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        TOXENV: [py37, py38, s3fs, gcsfs]
+        TOXENV: [py36, py37, py38, s3fs, gcsfs]
 
     env:
       TOXENV: ${{ matrix.TOXENV }}
diff --git a/setup.py b/setup.py
index 8a5869704..6398e33ce 100644
--- a/setup.py
+++ b/setup.py
@@ -31,7 +31,7 @@
     license="BSD",
     keywords="file",
     packages=["fsspec", "fsspec.implementations"],
-    python_requires=">=3.7",
+    python_requires=">=3.6",
     install_requires=open("requirements.txt").read().strip().split("\n"),
     extras_require={
         ":python_version < '3.8'": ["importlib_metadata"],
@@ -43,7 +43,7 @@
         "git": ["pygit2"],
         "github": ["requests"],
         "gs": ["gcsfs"],
-        "hdfs": ["pyarrow"],
+        "hdfs": ["pyarrow >= 1"],
         "http": ["requests", "aiohttp"],
         "sftp": ["paramiko"],
         "s3": ["s3fs"],
diff --git a/tox.ini b/tox.ini
index dbe777b2c..86c32a614 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,7 +16,7 @@ conda_deps=
     lz4
     distributed
     dask
-    pyarrow
+    'pyarrow >= 1'
     panel
     notebook
     pygit2