diff --git a/opt.sh b/opt.sh
index 01c4380..056d769 100644
--- a/opt.sh
+++ b/opt.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 wasm=dist/portfolio-*_bg.wasm
 js=dist/portfolio-*.js
-wasm-opt -O2 --fast-math $wasm -o $wasm
+wasm-opt -O2 --fast-math --enable-simd $wasm -o $wasm
 find dist/ \
   -name "*.js" -o \
   -name "*.pdf" -o \