diff --git a/.gitignore b/.gitignore
index 76f53cd06..0460c7c13 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,6 +21,7 @@ __pycache__
 /yosys
 /yosys.exe
 /yosys.js
+/yosys.wasm
 /yosys-abc
 /yosys-abc.exe
 /yosys-config
diff --git a/Makefile b/Makefile
index 0eb42e0d6..a911e6103 100644
--- a/Makefile
+++ b/Makefile
@@ -257,10 +257,10 @@ viz.js:
 	wget -O viz.js.part https://github.com/mdaines/viz.js/releases/download/0.0.3/viz.js
 	mv viz.js.part viz.js
 
-yosysjs-$(YOSYS_VER).zip: yosys.js viz.js misc/yosysjs/*
+yosysjs-$(YOSYS_VER).zip: yosys.js yosys.wasm viz.js misc/yosysjs/*
 	rm -rf yosysjs-$(YOSYS_VER) yosysjs-$(YOSYS_VER).zip
 	mkdir -p yosysjs-$(YOSYS_VER)
-	cp viz.js misc/yosysjs/* yosys.js yosysjs-$(YOSYS_VER)/
+	cp viz.js misc/yosysjs/* yosys.js yosys.wasm yosysjs-$(YOSYS_VER)/
 	zip -r yosysjs-$(YOSYS_VER).zip yosysjs-$(YOSYS_VER)
 
 yosys.html: misc/yosys.html