diff --git a/lib/yarp/yarp.gemspec b/lib/yarp/yarp.gemspec
index fceda5b1a0..ceea5e8eb6 100644
--- a/lib/yarp/yarp.gemspec
+++ b/lib/yarp/yarp.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |spec|
   spec.name = "yarp"
-  spec.version = "0.8.0"
+  spec.version = "0.9.0"
   spec.authors = ["Shopify"]
   spec.email = ["ruby@shopify.com"]
 
diff --git a/yarp/extension.h b/yarp/extension.h
index fe004d16da..fc24add420 100644
--- a/yarp/extension.h
+++ b/yarp/extension.h
@@ -1,7 +1,7 @@
 #ifndef YARP_EXT_NODE_H
 #define YARP_EXT_NODE_H
 
-#define EXPECTED_YARP_VERSION "0.8.0"
+#define EXPECTED_YARP_VERSION "0.9.0"
 
 #include <ruby.h>
 #include <ruby/encoding.h>
diff --git a/yarp/templates/java/org/yarp/Loader.java.erb b/yarp/templates/java/org/yarp/Loader.java.erb
index e3e29e446b..1c3a64354c 100644
--- a/yarp/templates/java/org/yarp/Loader.java.erb
+++ b/yarp/templates/java/org/yarp/Loader.java.erb
@@ -60,7 +60,7 @@ public class Loader {
         expect((byte) 'P');
 
         expect((byte) 0);
-        expect((byte) 8);
+        expect((byte) 9);
         expect((byte) 0);
 
         // This loads the name of the encoding. We don't actually do anything
diff --git a/yarp/templates/lib/yarp/serialize.rb.erb b/yarp/templates/lib/yarp/serialize.rb.erb
index 44ca3146fb..1959a71b62 100644
--- a/yarp/templates/lib/yarp/serialize.rb.erb
+++ b/yarp/templates/lib/yarp/serialize.rb.erb
@@ -14,7 +14,7 @@ end
 module YARP
   module Serialize
     MAJOR_VERSION = 0
-    MINOR_VERSION = 8
+    MINOR_VERSION = 9
     PATCH_VERSION = 0
 
     def self.load(input, serialized)
diff --git a/yarp/version.h b/yarp/version.h
index 179543f54d..a364aec247 100644
--- a/yarp/version.h
+++ b/yarp/version.h
@@ -1,4 +1,4 @@
 #define YP_VERSION_MAJOR 0
-#define YP_VERSION_MINOR 8
+#define YP_VERSION_MINOR 9
 #define YP_VERSION_PATCH 0
-#define YP_VERSION "0.8.0"
+#define YP_VERSION "0.9.0"