diff --git a/CHANGELOG.md b/CHANGELOG.md
index 815fc3be8..277b8f37f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+# v4.5.1 - 21 October 2021
+
+## Fixes
+- Fixes support for ATT&CK versions with more than 1 digit (ex. ATT&CK v10). 
+    - Uploaded layers without a specified ATT&CK version will no longer try and fail to load ATT&CK v1
+    - Uploaded layers uring ATT&CK v10 will no longer try and fail to load ATT&CK v1
+    - Downloaded layers using ATT&CK v10 will no longer claim they use ATT&CK v1
+
 # v4.5.0 - 21 October 2021
 
 ## New Features
diff --git a/nav-app/package-lock.json b/nav-app/package-lock.json
index 061d1c6b7..c6f1a492a 100755
--- a/nav-app/package-lock.json
+++ b/nav-app/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "attack-navigator",
-  "version": "4.5.0",
+  "version": "4.5.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/nav-app/package.json b/nav-app/package.json
index de23c57d8..674aad1de 100755
--- a/nav-app/package.json
+++ b/nav-app/package.json
@@ -5,7 +5,7 @@
     "type": "git",
     "url": "https://github.com/mitre-attack/attack-navigator.git"
   },
-  "version": "4.5.0",
+  "version": "4.5.1",
   "license": "Apache-2.0",
   "scripts": {
     "ng": "ng",
diff --git a/nav-app/src/app/data.service.ts b/nav-app/src/app/data.service.ts
index f47244645..ae9b07d59 100755
--- a/nav-app/src/app/data.service.ts
+++ b/nav-app/src/app/data.service.ts
@@ -329,14 +329,14 @@ export class DataService {
      * Retrieves the first version defined in the config file
      */
     getCurrentVersion() {
-        return this.versions[0].match(/v[0-9]/g)[0].toLowerCase();
+        return this.versions[0].match(/v[0-9]+/g)[0].toLowerCase();
     }
 
     /**
      * Is the given version supported?
      */
     isSupported(version: string) {
-        return version.match(/[0-9]/g)[0] < this.versions[this.versions.length - 1].match(/[0-9]/g)[0]? false : true;
+        return version.match(/[0-9]+/g)[0] < this.versions[this.versions.length - 1].match(/[0-9]+/g)[0]? false : true;
     }
 
     /**
@@ -801,6 +801,6 @@ export class Domain {
      * Get version of this domain
      */
     getVersion() {
-        return this.version.match(/[0-9]/g)[0];
+        return this.version.match(/[0-9]+/g)[0];
     }
 }
diff --git a/nav-app/src/app/globals.ts b/nav-app/src/app/globals.ts
index c71b65f32..5c9b8061c 100755
--- a/nav-app/src/app/globals.ts
+++ b/nav-app/src/app/globals.ts
@@ -5,5 +5,5 @@
  //
 'use strict';
 
-export const nav_version: string="4.5.0"
+export const nav_version: string="4.5.1"
 export const layer_version: string="4.2"
diff --git a/nav-app/src/app/viewmodels.service.ts b/nav-app/src/app/viewmodels.service.ts
index d4d4fa5c7..6742aea31 100755
--- a/nav-app/src/app/viewmodels.service.ts
+++ b/nav-app/src/app/viewmodels.service.ts
@@ -1169,7 +1169,7 @@ export class ViewModel {
             "layer": globals.layer_version
         }
 
-        rep.domain = this.domainVersionID.substr(0, this.domainVersionID.search(/-v[0-9]/g));
+        rep.domain = this.domainVersionID.substr(0, this.domainVersionID.search(/-v[0-9]+/g));
         rep.description = this.description;
         rep.filters = JSON.parse(this.filters.serialize());
         rep.sorting = this.sorting;
@@ -1199,7 +1199,7 @@ export class ViewModel {
         if ("versions" in obj) {
             if ("attack" in obj.versions) {
                 if (typeof(obj.versions.attack) === "string") {
-                    if (obj.versions.attack.length > 0) this.version = "v" + obj.versions.attack.match(/[0-9]/g)[0];
+                    if (obj.versions.attack.length > 0) this.version = "v" + obj.versions.attack.match(/[0-9]+/g)[0];
                 }
                 else console.error("TypeError: attack version field is not a string");
             }