diff --git a/README.md b/README.md
index 86a4bda..550e6bd 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ Library of utilitities for procedural generation
 #### Using UnityPackageManager (for Unity 2019.3 or later)
 Open the package manager window (menu: Window > Package Manager)<br/>
 Select "Add package from git URL...", fill in the pop-up with the following link:<br/>
-https://github.com/coryleach/UnityProcgen.git#0.0.8<br/>
+https://github.com/coryleach/UnityProcgen.git#0.0.9<br/>
 
 #### Using UnityPackageManager (for Unity 2019.1 or later)
 
@@ -25,7 +25,7 @@ Find the manifest.json file in the Packages folder of your project and edit it t
 ```js
 {
   "dependencies": {
-    "com.gameframe.procgen": "https://github.com/coryleach/UnityProcgen.git#0.0.8",
+    "com.gameframe.procgen": "https://github.com/coryleach/UnityProcgen.git#0.0.9",
     ...
   },
 }
diff --git a/Runtime/Utility/IRandomNumberGenerator.cs b/Runtime/Utility/IRandomNumberGenerator.cs
index 79faade..dfac98b 100644
--- a/Runtime/Utility/IRandomNumberGenerator.cs
+++ b/Runtime/Utility/IRandomNumberGenerator.cs
@@ -12,6 +12,7 @@ public interface IRandomNumberGenerator
         ushort NextUshort();
         byte NextByte();
         int NextInt();
+        int NextIntRange(int min, int max);
         short NextShort();
         float NextFloatZeroToOne();
         float NextFloatNegOneToOne();
diff --git a/package.json b/package.json
index b7c7810..488434b 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "name": "com.gameframe.procgen",
   "displayName": "Gameframe.Procgen",
   "repositoryName": "UnityProcgen",
-  "version": "0.0.8",
+  "version": "0.0.9",
   "description": "Library of utilitities for procedural generation",
   "type": "library",
   "keywords": [],