diff --git a/install-scripts/.local/bin/install-protoc-home b/install-scripts/.local/bin/install-protoc-home
index e04d9f0..577030b 100755
--- a/install-scripts/.local/bin/install-protoc-home
+++ b/install-scripts/.local/bin/install-protoc-home
@@ -1,33 +1,35 @@
 #!/usr/bin/env bash
 
-set -x
 set -e
 
 # shellcheck disable=SC1090
 source "${XDG_DATA_HOME}/buddy-up/includes/utils.sh"
 
-VERSION=${VERSION:-3.15.6}
-APP=protoc
-APPS_DIR=${XDG_DATA_HOME}/buddy-up/apps/${APP}
-VER_DIR=${APPS_DIR}/${VERSION}
+get_os () (
+    case $(uname -s) in
+        Linux*)         echo linux;;
+        Darwin*)        echo osx;;
+        *)          >&2 echo "unsupported os"; return;
+    esac
+)
 
-OS=$(get_os)
-if [[ $OS == darwin ]]; then
-    OS=osx
-fi
+get_arch () (
+    uname -m
+)
 
-ARCH=$(get_arch)
-if [[ $ARCH == amd64 ]]; then
-    ARCH=x86_64
-fi
+VERSION=${VERSION:-3.19.4}
+APP=protoc
+APPS_DIR=${XDG_DATA_HOME}/apps/releases/${APP}
+VER_DIR=${APPS_DIR}/${VERSION}
 
-ZIP=protoc-${VERSION}-${OS}-${ARCH}.zip
+ZIP=protoc-${VERSION}-$(get_os)-$(get_arch).zip
 TMP_DIR=$(mktemp -d)
 DEST_FILE=$TMP_DIR/$ZIP
 URL=https://github.com/protocolbuffers/protobuf/releases/download/v${VERSION}/${ZIP}
 
 if [[ ! -d "${VER_DIR}" ]]; then
     curl --output "${DEST_FILE}" --location "${URL}"
+    mkdir -p "${VER_DIR}"
     unzip -o "${DEST_FILE}" -d "${VER_DIR}"
     find "${VER_DIR}" -type f -exec chmod 644 {} \;
     find "${VER_DIR}" -type d -exec chmod 755 {} \;
@@ -38,7 +40,7 @@ rm -rfv "$TMP_DIR"
 set_current_link "${APPS_DIR}" "${VERSION}"
 
 apps=$(find "${APPS_DIR}/current/bin" -maxdepth 1 -perm +111 -type f -exec basename {} \;)
-cd "${XDG_BIN_HOME}"
+pushd "${XDG_BIN_HOME}"
 for bin in $apps; do
     if [[ ! -s $bin ]]; then
         ln -s \
@@ -46,3 +48,12 @@ for bin in $apps; do
             "${bin}"
     fi
 done
+popd
+
+pushd "${XDG_INCLUDE_HOME}"
+if [[ ! -s google ]]; then
+    ln -s \
+        "$(relative_path "${XDG_INCLUDE_HOME}" "${APPS_DIR}/current/include/google")" \
+        google
+fi
+popd