diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index 6e3b8f99..b33f6008 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -11,8 +11,8 @@ jobs:
           - 3.0.4
           - 3.1.2
           - 3.2.0
-          - git+https://github.com/sphinx-doc/sphinx.git@3.2.x
-          - git+https://github.com/sphinx-doc/sphinx.git@3.x
+          #- git+https://github.com/sphinx-doc/sphinx.git@3.2.x
+          #- git+https://github.com/sphinx-doc/sphinx.git@3.x
           # master (Sphinx 4) will require at least Python 3.6, so disable it for now
           #- git+https://github.com/sphinx-doc/sphinx.git@master
 
diff --git a/requirements/production.txt b/requirements/production.txt
index 457e4f48..c6f74e00 100644
--- a/requirements/production.txt
+++ b/requirements/production.txt
@@ -2,5 +2,5 @@ docutils>=0.12
 Jinja2>=2.7.3
 MarkupSafe>=0.23
 Pygments>=1.6
-Sphinx>=3.0,<3.4
+Sphinx>=3.0,<3.3
 six>=1.9.0