diff --git a/tools/workflows/Makefile b/tools/workflows/Makefile
index a5c1709d4..283110ced 100644
--- a/tools/workflows/Makefile
+++ b/tools/workflows/Makefile
@@ -27,7 +27,7 @@ single_makefiles := $(filter-out %.make,$(makefiles))
 multi_makefiles := $(filter %.make,$(makefiles))
 
 # External dependencies
-external := $(addprefix $(ROOT)/ext/,fatfs lwip pico-sdk wolfssl)
+external := $(addprefix $(ROOT)/ext/,fatfs lwip pico-sdk wolfssl littlefs)
 
 # Documents
 docs := $(shell find $(ROOT)/doc -type f -name Doxyfile_html)