diff --git a/pylint_plugins/api_models_test.py b/pylint_plugins/api_models_test.py
index 95a2a0781d..6d201a55ef 100644
--- a/pylint_plugins/api_models_test.py
+++ b/pylint_plugins/api_models_test.py
@@ -309,10 +309,12 @@ def test():
                 line=assign_node_missing.lineno,
                 # fixme: +10 is a workaround, need understand why coloffset
                 # is 4 but visit_attribute is coloffset 14.
-                col_offset=assign_node_missing.col_offset+10,
+                col_offset=assign_node_missing.col_offset + 10,
                 end_line=assign_node_missing.end_lineno,
                 end_col_offset=assign_node_missing.end_col_offset,
-                confidence=Confidence(name='INFERENCE', description='Warning based on inference result.'),
+                confidence=Confidence(
+                    name="INFERENCE", description="Warning based on inference result."
+                ),
             )
         ):
             self.checker.visit_attribute(assign_node_missing.value)
diff --git a/requirements-pants.txt b/requirements-pants.txt
index ca56e6d278..e9aa8ab982 100644
--- a/requirements-pants.txt
+++ b/requirements-pants.txt
@@ -47,7 +47,9 @@ psutil
 pymongo>=3.11.0,<3.13.0
 # pyrabbit used in an integration test
 pyrabbit
-pytest
+astroid==2.15.8
+pylint==2.17.7
+pytest==6.2.5
 python-dateutil
 editor==1.6.6
 Pygments
diff --git a/test-requirements.txt b/test-requirements.txt
index 903dad34ea..d15578473f 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,6 +1,7 @@
 coverage
 pep8==1.7.1
-st2flake8==0.1.0
+flake8==7.0.0
+st2-flake8 @ git+https://github.com/nzlosh/st2-flake8@master
 astroid==2.15.8
 pylint==2.17.7
 pylint-plugin-utils>=0.4
@@ -11,7 +12,8 @@ ipython<6.0.0
 isort>=4.2.5
 mock==4.0.3
 tabulate
-sphinx==1.7.9
+# 4.5.0 required for Jinja-3.1.3 support.
+sphinx==4.5.0
 sphinx-autobuild
 # pin alabaster (sphinx dependency) or pip installs one that is not compatible
 alabaster<0.7.14