diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 31dbb06f..2631ec8b 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -10722,5 +10722,5 @@ getJasmineRequireObj().UserContext = function(j$) {
 };
 
 getJasmineRequireObj().version = function() {
-  return '3.10.0';
+  return '3.99.0-dev';
 };
diff --git a/lib/jasmine-core/version.rb b/lib/jasmine-core/version.rb
index 8d69fe3f..001d4b5e 100644
--- a/lib/jasmine-core/version.rb
+++ b/lib/jasmine-core/version.rb
@@ -4,6 +4,6 @@
 #
 module Jasmine
   module Core
-    VERSION = "3.10.0"
+    VERSION = "3.99.0.dev"
   end
 end
diff --git a/package.json b/package.json
index 9e7a620a..18ca31ea 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "jasmine-core",
   "license": "MIT",
-  "version": "3.10.0",
+  "version": "3.99.0-dev",
   "repository": {
     "type": "git",
     "url": "https://github.com/jasmine/jasmine.git"