diff --git a/setup.cfg b/setup.cfg
index 3d8cb8eb0..9223b46f7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -77,8 +77,9 @@ test =
     pytest-rerunfailures
     pytest-cov
     coverage
-    # For snapshot testing
-    syrupy
+    # For snapshot testing. v4.6.3 is incompatible with pytest-rerunfailures, see
+    # https://github.com/syrupy-project/syrupy/issues/879
+    syrupy==4.6.2
     psutil
     astropy
     suntime