diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/AbstractPackManager.java b/core/src/main/java/net/momirealms/craftengine/core/pack/AbstractPackManager.java
index 1f69ce39f..f64c064f1 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/AbstractPackManager.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/AbstractPackManager.java
@@ -865,10 +865,12 @@ public abstract class AbstractPackManager implements PackManager {
         }
         for (Revision revision : revisions) {
             JsonObject entry = new JsonObject();
-            JsonArray formatsArray = new JsonArray();
-            entry.add("formats", formatsArray);
-            formatsArray.add(revision.minPackVersion().major());
-            formatsArray.add(revision.maxPackVersion().major());
+            if (revision.minPackVersion().major() < 65) {
+                JsonArray formatsArray = new JsonArray();
+                entry.add("formats", formatsArray);
+                formatsArray.add(revision.minPackVersion().major());
+                formatsArray.add(revision.maxPackVersion().major());
+            }
             entry.add("min_format", revision.minPackVersion().getAsJsonArray());
             entry.add("max_format", revision.maxPackVersion().getAsJsonArray());
             entry.addProperty("directory", Config.createOverlayFolderName(revision.versionString()));
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/conflict/resolution/ResolutionMergePackMcMeta.java b/core/src/main/java/net/momirealms/craftengine/core/pack/conflict/resolution/ResolutionMergePackMcMeta.java
index 65e5ee5d2..38063ac9e 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/conflict/resolution/ResolutionMergePackMcMeta.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/conflict/resolution/ResolutionMergePackMcMeta.java
@@ -165,11 +165,14 @@ public class ResolutionMergePackMcMeta implements Resolution {
                 Pair<PackVersion, PackVersion> supportedVersions = getSupportedVersions(entryJson);
                 PackVersion min = PackVersion.getHigher(supportedVersions.left(), PackVersion.MIN_OVERLAY_VERSION);
                 PackVersion max = PackVersion.getHigher(supportedVersions.right(), PackVersion.MIN_OVERLAY_VERSION);
-                // 旧版格式支持
-                JsonArray supportedFormats = new JsonArray();
-                supportedFormats.add(min.major());
-                supportedFormats.add(max.major());
-                entryJson.add("formats", supportedFormats);
+                // https://minecraft.wiki/w/Java_Edition_25w31a
+                if (min.major() < 65) {
+                    // 旧版格式支持
+                    JsonArray supportedFormats = new JsonArray();
+                    supportedFormats.add(min.major());
+                    supportedFormats.add(max.major());
+                    entryJson.add("formats", supportedFormats);
+                }
                 // 新版格式支持
                 JsonArray minFormat = new JsonArray();
                 minFormat.add(min.major());
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/Overlay.java b/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/Overlay.java
index 72440de6b..b995fa8cd 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/Overlay.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/Overlay.java
@@ -52,10 +52,12 @@ public class Overlay {
         maxFormat.add(new JsonPrimitive(this.maxVersion.major()));
         maxFormat.add(new JsonPrimitive(this.maxVersion.minor()));
         entry.add("max_format", maxFormat);
-        JsonArray formats = new JsonArray();
-        formats.add(new JsonPrimitive(this.minVersion.major()));
-        formats.add(new JsonPrimitive(this.maxVersion.major()));
-        entry.add("formats", formats);
+        if (this.minVersion.major() < 65) {
+            JsonArray formats = new JsonArray();
+            formats.add(new JsonPrimitive(this.minVersion.major()));
+            formats.add(new JsonPrimitive(this.maxVersion.major()));
+            entry.add("formats", formats);
+        }
         return entry;
     }