1 files changed, 4 insertions, 3 deletions
diff --git a/tox.ini b/tox.ini
index 463a34d137..ea1ed16bde 100644
--- a/tox.ini
+++ b/tox.ini
@@ -114,7 +114,7 @@ commands =
 [testenv:packaging]
 skip_install=True
 deps =
-    check-manifest
+    check-manifest==0.41
 commands =
     check-manifest
 
@@ -122,7 +122,8 @@ commands =
 skip_install = True
 basepython = python3.6
 deps =
-    flake8
+    flake8==3.7.9  # We temporarily pin flake8's version before the v1.13.0 merge which has
+                   # fixes for flake8 3.8.1
     flake8-comprehensions
     black==19.10b0  # We pin so that our tests don't start failing on new releases of black.
 commands =
@@ -139,7 +140,7 @@ commands = /bin/sh -c "isort -c -df -sp setup.cfg -rc synapse tests scripts-dev
 skip_install = True
 deps = towncrier>=18.6.0rc1
 commands =
-   python -m towncrier.check --compare-with=origin/develop
+   python -m towncrier.check --compare-with=origin/dinsic
 basepython = python3.6
 
 [testenv:check-sampleconfig]