diff --git a/build-alpine.sh b/build-alpine.sh
index 3775169..3129854 100755
--- a/build-alpine.sh
+++ b/build-alpine.sh
@@ -70,10 +70,11 @@ cd nginx-*/
 make modules
 
 . /etc/os-release
+versionsuffix="$ID$VERSION_ID-nginx$NGINX_VERSION"
 
-find_runtime_dependency_pkgs objs/*.so > ../required_packages.txt
+find_runtime_dependency_pkgs objs/*.so > "../required_packages-$versionsuffix.txt"
 for so in objs/*.so
 do
-	name="$(basename "$so" .so)-$ID$VERSION_ID-nginx$NGINX_VERSION.so"
+	name="$(basename "$so" .so)-$versionsuffix.so"
 	install -m644 "$so" "../$name"
 done