diff --git a/tests/net/gcoap_fileserver/Makefile b/tests/net/gcoap_fileserver/Makefile
index 32165c69c9..2bd00ed769 100644
--- a/tests/net/gcoap_fileserver/Makefile
+++ b/tests/net/gcoap_fileserver/Makefile
@@ -21,10 +21,12 @@ USEMODULE += vfs_auto_format
 USEMODULE += hashes
 USEMODULE += shell_cmd_md5sum
 
+# This integration test uncovers a bug somwehere in our stack, but there
+# are currently no resources to debug it, so blacklist it to keep CI running
+TEST_ON_CI_BLACKLIST += all
+
 # automated test only works on native
-TEST_ON_CI_WHITELIST += native
-# FIXME: for some reason the test fails very often when built with clang
-TOOLCHAINS_BLACKLIST += llvm
+# TEST_ON_CI_WHITELIST += native
 
 # use small blocksize for test to increase chance for errors
 CFLAGS += -DCONFIG_NANOCOAP_BLOCKSIZE_DEFAULT=COAP_BLOCKSIZE_16