diff --git a/README.md b/README.md
index a085682..d77eef3 100644
--- a/README.md
+++ b/README.md
@@ -70,11 +70,11 @@ The latest prototype is in the folder `app-proto`. It includes both a user inter
 
 1. From the `app-proto` folder, call `trunk build --release`.
    - Building in [release mode](https://doc.rust-lang.org/cargo/reference/profiles.html#release) produces an executable which is smaller and often much faster, but harder to debug and more time-consuming to build.
-2. Use `bash` to run the packaging script `tools/package-for-deployment.bash`.
+2. Use `sh` to run the packaging script `tools/package-for-deployment.sh`.
    - The script is location-independent, so you can do this from anywhere in the dyna3 repository.
    - The call from the top level of the repository is:
      ```bash
-     bash tools/package-for-deployment.bash
+     sh tools/package-for-deployment.sh
      ```
    - This will overwrite or replace the files in `deploy/dyna3`.
 3. Put the contents of `deploy/dyna3` in the folder on your server that the prototype will be served from.
diff --git a/tools/package-for-deployment.bash b/tools/package-for-deployment.bash
deleted file mode 100644
index 743a508..0000000
--- a/tools/package-for-deployment.bash
+++ /dev/null
@@ -1,16 +0,0 @@
-# set paths. this technique for getting the script location comes from
-# `mklement0` on Stack Overflow
-#
-#   https://stackoverflow.com/a/24114056
-#
-tools=$(dirname -- "$(readlink -f -- "$BASH_SOURCE")")
-src="$tools/../app-proto/dist"
-dest="$tools/../deploy/dyna3"
-
-# remove the old hash-named files
-[ -e "$dest"/dyna3-*.js ] && rm "$dest"/dyna3-*.js
-[ -e "$dest"/dyna3-*.wasm ] && rm "$dest"/dyna3-*.wasm
-[ -e "$dest"/main-*.css ] && rm "$dest"/main-*.css
-
-# copy the distribution
-cp -r "$src/." "$dest"
diff --git a/tools/package-for-deployment.sh b/tools/package-for-deployment.sh
new file mode 100644
index 0000000..fdda434
--- /dev/null
+++ b/tools/package-for-deployment.sh
@@ -0,0 +1,16 @@
+# set paths. this technique for getting the script location comes from
+# `mklement0` on Stack Overflow
+#
+#   https://stackoverflow.com/a/24114056
+#
+TOOLS=$(dirname -- $0)
+SRC="$TOOLS/../app-proto/dist"
+DEST="$TOOLS/../deploy/dyna3"
+
+# remove the old hash-named files
+[ -e "$DEST"/dyna3-*.js ] && rm "$DEST"/dyna3-*.js
+[ -e "$DEST"/dyna3-*.wasm ] && rm "$DEST"/dyna3-*.wasm
+[ -e "$DEST"/main-*.css ] && rm "$DEST"/main-*.css
+
+# copy the distribution
+cp -r "$SRC/." "$DEST"