diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6e22665..b6935b9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,30 @@
 # Changelog
 
+## `2.1.7`
+
+:tophat:
+
+  - Added `mustGet` and `mustFind` as whinny versions of `get` and `find`
+
+## `2.1.6`
+
+:nail_care:
+
+  - Added flow types in the build process
+  - Updated dependencies
+
+## `2.1.5`
+
+:nail_care:
+
+  - Improved error handling (kudos to @p3drosola)
+
+## `2.1.4`
+
+:bug: Bugfix:
+
+  - Stop publishing `babelrc` since it breaks React native
+
 ## `2.1.3`
 
 :bug: Bugfix:
diff --git a/package.json b/package.json
index 60b9b63..ce1dd90 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mobx-rest",
-  "version": "2.1.6",
+  "version": "2.1.7",
   "description": "REST conventions for mobx.",
   "repository": {
     "type": "git",
@@ -31,7 +31,7 @@
   },
   "devDependencies": {
     "babel-cli": "^6.24.1",
-    "babel-core": "^6.24.1",
+    "babel-core": "^6.25.0",
     "babel-eslint": "^7.2.3",
     "babel-jest": "^20.0.3",
     "babel-plugin-transform-async-to-generator": "^6.24.1",
diff --git a/src/Collection.js b/src/Collection.js
index fff6de4..4bdb0bb 100644
--- a/src/Collection.js
+++ b/src/Collection.js
@@ -95,6 +95,17 @@ export default class Collection<T: Model> {
     return this.models.find(item => item.id === id)
   }
 
+  /**
+   * The whinny version of the `get` method
+   */
+  mustGet (id: Id): T {
+    const model = this.get(id)
+
+    if (!model) throw Error(`Invariant: Model must be found with id: ${id}`)
+
+    return model
+  }
+
   /**
    * Get resources matching criteria
    */
@@ -113,6 +124,20 @@ export default class Collection<T: Model> {
     })
   }
 
+  /**
+   * The whinny version of `find`
+   */
+  mustFind (query: { [key: string]: mixed }): T {
+    const model = this.find(query)
+
+    if (!model) {
+      const conditions = JSON.stringify(query)
+      throw Error(`Invariant: Model must be found with: ${conditions}`)
+    }
+
+    return model
+  }
+
   /**
    * Adds a collection of models.
    * Returns the added models.