diff --git a/builder/main.py b/builder/main.py
index 4ebde81..bff5d70 100644
--- a/builder/main.py
+++ b/builder/main.py
@@ -224,6 +224,7 @@ else:
     if set(["buildfs", "uploadfs", "uploadfsota"]) & set(COMMAND_LINE_TARGETS):
         target_firm = env.DataToBin(
             join("$BUILD_DIR", "${ESP32_SPIFFS_IMAGE_NAME}"), "$PROJECTDATA_DIR")
+        env.NoCache(target_firm)
         AlwaysBuild(target_firm)
     else:
         target_firm = env.ElfToBin(