diff --git a/examples/suit_update/Makefile b/examples/suit_update/Makefile
index 09f8dc9777..93fddffc13 100644
--- a/examples/suit_update/Makefile
+++ b/examples/suit_update/Makefile
@@ -87,6 +87,11 @@ endif
 # files here so they will be submitted along with the test jobs.
 TEST_EXTRA_FILES += $(SLOT_RIOT_ELFS) $(SUIT_SEC) $(SUIT_PUB)
 
+# Due to issues with source address selection, this test currently might not
+# run reliably on CI.
+# See #12404, #12408.
+TEST_ON_CI_BLACKLIST += all
+
 include $(RIOTBASE)/Makefile.include
 
 .PHONY: host-tools