Version 8.4.9-dev

Change-Id: I3ea7260a9c5380f72b15ea3a11b195345cdc2479
diff --git a/src/main/java/com/android/tools/r8/Version.java b/src/main/java/com/android/tools/r8/Version.java
index 590e653..5aa018a 100644
--- a/src/main/java/com/android/tools/r8/Version.java
+++ b/src/main/java/com/android/tools/r8/Version.java
@@ -13,7 +13,7 @@
 
   // This field is accessed from release scripts using simple pattern matching.
   // Therefore, changing this field could break our release scripts.
-  public static final String LABEL = "8.4.8-dev";
+  public static final String LABEL = "8.4.9-dev";
 
   private Version() {
   }