diff --git a/src/components/PublishModal.tsx b/src/components/PublishModal.tsx
index 90535af..9b953d4 100644
--- a/src/components/PublishModal.tsx
+++ b/src/components/PublishModal.tsx
@@ -467,6 +467,7 @@ export function PublishModal({
             modrinth: selectedModrinth.map((mc_version) => ({ mc_version })),
             curseforge: selectedCurseforge.map((mc_version) => ({ mc_version })),
           },
+          allMcVersions: projectVersions,
           cutoffMcVersion: lastVersionEnd ?? "",
           changelog,
           versionType,
diff --git a/src/services/publish.schemas.ts b/src/services/publish.schemas.ts
index d8e92d3..16b2cc9 100644
--- a/src/services/publish.schemas.ts
+++ b/src/services/publish.schemas.ts
@@ -32,6 +32,9 @@ export const PublishInputSchema = z.object({
   mcVersions: z.object(createRecord(
     platforms, z.array(z.object({ mc_version: z.string() }))
   )),
+  // 项目全部 MC 版本（完整列表）。范围计算必须基于它：只传勾选子集会让
+  // 子集末尾被误判为"最后一个版本"，范围按 lastVersionEnd 一路放大到最新 MC 版本
+  allMcVersions: z.array(z.string()).min(1),
   cutoffMcVersion: z.string(),  // 最后一个版本的截止 MC 版本，两个平台共用
   changelog: z.string(),
   versionType: BaseVersionSchema.shape.version_type,
diff --git a/src/services/publish.ts b/src/services/publish.ts
index ae06f72..58bc6bd 100644
--- a/src/services/publish.ts
+++ b/src/services/publish.ts
@@ -81,11 +81,16 @@ async function runPlatform(
   // 否则前端进度条会停在 running 假象里，错误也被吞掉。
   let mcVersionEntries: McVersionEntry[];
   try {
+    // 范围必须基于完整项目版本列表计算，勾选只决定发布哪些条目
+    const selected = new Set(mcVersions.map((v) => v.mc_version));
     mcVersionEntries = computeVersionRanges(
-      mcVersions.map(v => v.mc_version),
+      ctx.input.allMcVersions,
       await getGameVersionsFn(),
       ctx.input.cutoffMcVersion
-    );
+    ).filter((e) => selected.has(e.version));
+    if (mcVersionEntries.length !== selected.size) {
+      throw new Error("勾选版本与项目版本列表不一致，请刷新后重试");
+    }
   } catch (err) {
     const msg = errorMessage(err);
     console.error(`[publish] ${platform} 准备阶段失败:`, err);