1 files changed, 1 insertions, 1 deletions
diff --git a/scripts-dev/complement.sh b/scripts-dev/complement.sh
index a7b1e1e3a8..76c859694f 100755
--- a/scripts-dev/complement.sh
+++ b/scripts-dev/complement.sh
@@ -126,7 +126,7 @@ export COMPLEMENT_BASE_IMAGE=complement-synapse
 
 extra_test_args=()
 
-test_tags="synapse_blacklist,msc3787"
+test_tags="synapse_blacklist,msc3787,msc3874"
 
 # All environment variables starting with PASS_ will be shared.
 # (The prefix is stripped off before reaching the container.)