diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/versioning/GameVersionNumber.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/versioning/GameVersionNumber.java
index 4239702f1..09ed46959 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/versioning/GameVersionNumber.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/versioning/GameVersionNumber.java
@@ -103,7 +103,7 @@ public abstract class GameVersionNumber implements Comparable<GameVersionNumber>
     }
 
     enum Type {
-        PRE_CLASSIC, CLASSIC, INFDEV, ALPHA, BETA, NEW
+        PRE_CLASSIC, CLASSIC, INDEV, INFDEV, ALPHA, BETA, NEW
     }
 
     abstract Type getType();
@@ -141,11 +141,15 @@ public abstract class GameVersionNumber implements Comparable<GameVersionNumber>
                     prefixLength = "rd-".length();
                     break;
                 case 'i':
-                    if (!value.startsWith("inf-")) {
+                    if (value.startsWith("inf-")) {
+                        type = Type.INFDEV;
+                        prefixLength = "inf-".length();
+                    } else if (value.startsWith("in-")) {
+                        type = Type.INDEV;
+                        prefixLength = "in-".length();
+                    } else {
                         throw new IllegalArgumentException(value);
                     }
-                    type = Type.INFDEV;
-                    prefixLength = "inf-".length();
                     break;
                 case 'a':
                     type = Type.ALPHA;
diff --git a/HMCLCore/src/test/java/org/jackhuang/hmcl/util/versioning/GameVersionNumberTest.java b/HMCLCore/src/test/java/org/jackhuang/hmcl/util/versioning/GameVersionNumberTest.java
index 8fb4650d2..bd65468e8 100644
--- a/HMCLCore/src/test/java/org/jackhuang/hmcl/util/versioning/GameVersionNumberTest.java
+++ b/HMCLCore/src/test/java/org/jackhuang/hmcl/util/versioning/GameVersionNumberTest.java
@@ -102,6 +102,8 @@ public final class GameVersionNumberTest {
     @Test
     public void testParseOld() {
         assertOldVersion("rd-132211", GameVersionNumber.Type.PRE_CLASSIC, "132211");
+        assertOldVersion("in-20100223", GameVersionNumber.Type.INDEV, "20100223");
+        assertOldVersion("in-20100212-2", GameVersionNumber.Type.INDEV, "20100212-2");
         assertOldVersion("inf-20100618", GameVersionNumber.Type.INFDEV, "20100618");
         assertOldVersion("inf-20100330-1", GameVersionNumber.Type.INFDEV, "20100330-1");
         assertOldVersion("a1.0.6", GameVersionNumber.Type.ALPHA, "1.0.6");