diff --git a/ci/get-latest-tag.sh b/ci/get-latest-tag.sh
deleted file mode 100755
index 34e5e752..00000000
--- a/ci/get-latest-tag.sh
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/bin/env bash
-
-set -e
-
-function get_latest_tag() {
-    git fetch --tags
-    # This suppress an error occurred when the repository is a complete one.
-    git fetch --prune || true
-
-    latest_tag=''
-
-    # Get a latest tag in the shape of semver.
-    for ref in $(git for-each-ref --sort=-creatordate --format '%(refname)' refs/tags); do
-        tag="${ref#refs/tags/}"
-        if echo "${tag}" | grep -Eq '^v?([0-9]+)\.([0-9]+)\.([0-9]+)(?:-([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?(?:\+[0-9A-Za-z-]+)?$'; then
-            latest_tag="${tag}"
-        break
-        fi
-    done
-
-    if [ "${latest_tag}" = '' ]; then
-        latest_tag="${INPUT_INITIAL_VERSION}"
-    fi
-
-    echo "${latest_tag}"
-}
-
-get_latest_tag