diff --git a/ci/requirements/py36.yml b/ci/requirements/py36.yml
index f9847ef6da5..10fe69253e8 100644
--- a/ci/requirements/py36.yml
+++ b/ci/requirements/py36.yml
@@ -29,7 +29,7 @@ dependencies:
   - pandas
   - pint
   - pip
-  - pseudonetcdf<3.1  # FIXME https://github.com/pydata/xarray/issues/3409
+  - pseudonetcdf
   - pydap
   - pynio
   - pytest
diff --git a/ci/requirements/py37-windows.yml b/ci/requirements/py37-windows.yml
index 111cd96c30c..614a3bb1fab 100644
--- a/ci/requirements/py37-windows.yml
+++ b/ci/requirements/py37-windows.yml
@@ -29,7 +29,7 @@ dependencies:
   - pandas
   - pint
   - pip
-  - pseudonetcdf<3.1  # FIXME https://github.com/pydata/xarray/issues/3409
+  - pseudonetcdf
   - pydap
   # - pynio  # Not available on Windows
   - pytest
diff --git a/ci/requirements/py37.yml b/ci/requirements/py37.yml
index d816019dd65..827c664a222 100644
--- a/ci/requirements/py37.yml
+++ b/ci/requirements/py37.yml
@@ -29,7 +29,7 @@ dependencies:
   - pandas
   - pint
   - pip
-  - pseudonetcdf<3.1  # FIXME https://github.com/pydata/xarray/issues/3409
+  - pseudonetcdf
   - pydap
   - pynio
   - pytest