diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5e64fa44ffd..56d42da4631 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -411,6 +411,7 @@ jobs:
 
       - uses: michaelkaye/setup-matrix-synapse@main
         with:
+          installer: poetry
           uploadLogs: true
           httpPort: 8228
           disableRateLimiting: true
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index d5607c23f1c..f9476fbbfd5 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -48,8 +48,9 @@ jobs:
       with:
         python-version: 3.8
 
-    - uses: gnunicorn/setup-matrix-synapse@main
+    - uses: michaelkaye/setup-matrix-synapse@main
       with:
+        installer: poetry
         uploadLogs: true
         httpPort: 8228
         disableRateLimiting: true