diff --git a/ci/build.sh b/ci/build.sh
index db0b7f0..03814a6 100755
--- a/ci/build.sh
+++ b/ci/build.sh
@@ -38,4 +38,4 @@ mv repos/book/book _site/docs/book
 
 mkdir -p _site/wasm-pack/installer
 cp repos/wasm-pack/docs/_installer/init.sh _site/wasm-pack/installer/init.sh
-ed -i 's/\$VERSION/v0.13.1/' _site/wasm-pack/installer/init.sh
+sed -i 's/\$VERSION/v0.13.1/' _site/wasm-pack/installer/init.sh