diff --git a/GNUmakefile b/GNUmakefile
index e7b186d1..207bcdd7 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -985,7 +985,8 @@ PACKAGE_DIRS := \
 	core \
 	deps/codemirror \
 	deps/prettier \
-	deps/lit
+	deps/lit \
+	deps/speedscope
 
 RAW_FILES := $(sort $(filter-out apps/blog% apps/issues% apps/welcome% apps/journal% %.map, $(shell find $(PACKAGE_DIRS) -type f -not -name '.*')))