diff --git a/Makefile b/Makefile
index ebb97006..75dc8a25 100644
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,7 @@ ARCHIVE_SOURCES := $(basename $(ARCHIVES))
 
 # Needed to compress and split files/archives that are too large
 LARGE_FILES := $(shell find ./gds -type f -name "*.gds")
-LARGE_FILES += $(shell find . -type f -size +$(FILE_SIZE_LIMIT_MB)M -not -path "./.git/*" -not -path "./gds/*" -not -path "./openlane/*")
+LARGE_FILES += $(shell find . -type f -size +$(FILE_SIZE_LIMIT_MB)M -not -path "./.git/*" -not -path "./gds/*" -not -path "./oas/*" -not -path "./openlane/*")
 LARGE_FILES_GZ := $(addsuffix .$(ARCHIVE_EXT), $(LARGE_FILES))
 LARGE_FILES_GZ_SPLIT := $(addsuffix .$(ARCHIVE_EXT).00.split, $(LARGE_FILES))
 # consider splitting existing archives