diff --git a/github/check.gitea.update b/github/check.gitea.update
index b76cd2b..9de5a50 100755
--- a/github/check.gitea.update
+++ b/github/check.gitea.update
@@ -46,7 +46,7 @@ DEBUG=1
 script_wd=$(dirname "${0}")
 
 gitea_repo_url="https://github.com/go-gitea/gitea"
-gitea_new_version=$("${script_wd}"/releasetags "${gitea_repo_url}" | grep -vE -- '(dev|rc)' | head -n1 | sed 's/v//')
+gitea_new_version=$("${script_wd}"/releasetags "${gitea_repo_url}" | grep --invert-match --extended-regexp -- '(dev|rc)' | head --lines=1 | sed 's/v//')
 
 gitea_new_version_file="/tmp/.github.gitea.upgrade"
 
@@ -61,7 +61,7 @@ else
 	gitea_bin_path="gitea"
 	fi
 
-gitea_current_version=$("${gitea_bin_path}" -v | cut -d' ' -f3)
+gitea_current_version=$("${gitea_bin_path}" --version | cut --delimiter=' ' --fields=3)
 
 # }}}
 
@@ -84,7 +84,7 @@ if [ "${gitea_current_version}" != "${gitea_new_version}" ]; then
 
 else
 	[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Test version — The current version is up-to-date."
-	rm -f -- "${gitea_new_version_file}"
+	rm --force -- "${gitea_new_version_file}"
 fi
 # }}}