diff --git a/Test App/Podfile.lock b/Test App/Podfile.lock
index 566cef68..f5ef01da 100644
--- a/Test App/Podfile.lock	
+++ b/Test App/Podfile.lock	
@@ -1,5 +1,5 @@
 PODS:
-  - iOSDFULibrary (4.14.0):
+  - iOSDFULibrary (4.15.0):
     - ZIPFoundation (= 0.9.18)
   - ZIPFoundation (0.9.18)
 
@@ -15,7 +15,7 @@ EXTERNAL SOURCES:
     :path: "../"
 
 SPEC CHECKSUMS:
-  iOSDFULibrary: 638a1583a4b67b3ed51f4b0e3343565f421904ce
+  iOSDFULibrary: 6f8c127b205b3887a41b55956d70b855d4987945
   ZIPFoundation: fa9ae5af13b7cf168245f24d1c672a4fb972e37f
 
 PODFILE CHECKSUM: ae4b20f609dc65f886ce92e7f350ae5ef1fa65ca
diff --git a/Test App/Pods/Local Podspecs/iOSDFULibrary.podspec.json b/Test App/Pods/Local Podspecs/iOSDFULibrary.podspec.json
index 652a9171..5b3904d6 100644
--- a/Test App/Pods/Local Podspecs/iOSDFULibrary.podspec.json	
+++ b/Test App/Pods/Local Podspecs/iOSDFULibrary.podspec.json	
@@ -1,7 +1,7 @@
 {
   "name": "iOSDFULibrary",
   "module_name": "NordicDFU",
-  "version": "4.14.0",
+  "version": "4.15.0",
   "summary": "This repository contains a library to perform Device Firmware Update on the nRF5x devices.",
   "description": "The nRF5x Series chips are flash-based SoCs, and as such they represent the most flexible solution available. A key feature of the nRF5x Series and their associated software architecture and S-Series SoftDevices is the possibility for Over-The-Air Device Firmware Upgrade (OTA-DFU). See Figure 1. OTA-DFU allows firmware upgrades to be issued and downloaded to products in the field via the cloud and so enables OEMs to fix bugs and introduce new features to products that are already out on the market. This brings added security and flexibility to product development when using the nRF5x Series SoCs.",
   "homepage": "https://github.com/NordicSemiconductor/IOS-DFU-Library",
@@ -12,7 +12,7 @@
   },
   "source": {
     "git": "https://github.com/NordicSemiconductor/IOS-DFU-Library.git",
-    "tag": "4.14.0"
+    "tag": "4.15.0"
   },
   "social_media_url": "https://twitter.com/nordictweets",
   "swift_versions": [
diff --git a/Test App/Pods/Manifest.lock b/Test App/Pods/Manifest.lock
index 566cef68..f5ef01da 100644
--- a/Test App/Pods/Manifest.lock	
+++ b/Test App/Pods/Manifest.lock	
@@ -1,5 +1,5 @@
 PODS:
-  - iOSDFULibrary (4.14.0):
+  - iOSDFULibrary (4.15.0):
     - ZIPFoundation (= 0.9.18)
   - ZIPFoundation (0.9.18)
 
@@ -15,7 +15,7 @@ EXTERNAL SOURCES:
     :path: "../"
 
 SPEC CHECKSUMS:
-  iOSDFULibrary: 638a1583a4b67b3ed51f4b0e3343565f421904ce
+  iOSDFULibrary: 6f8c127b205b3887a41b55956d70b855d4987945
   ZIPFoundation: fa9ae5af13b7cf168245f24d1c672a4fb972e37f
 
 PODFILE CHECKSUM: ae4b20f609dc65f886ce92e7f350ae5ef1fa65ca
diff --git a/Test App/Pods/Target Support Files/iOSDFULibrary/ResourceBundle-PrivacyInfo-iOSDFULibrary-Info.plist b/Test App/Pods/Target Support Files/iOSDFULibrary/ResourceBundle-PrivacyInfo-iOSDFULibrary-Info.plist
index 53099f43..6b2567f1 100644
--- a/Test App/Pods/Target Support Files/iOSDFULibrary/ResourceBundle-PrivacyInfo-iOSDFULibrary-Info.plist	
+++ b/Test App/Pods/Target Support Files/iOSDFULibrary/ResourceBundle-PrivacyInfo-iOSDFULibrary-Info.plist	
@@ -13,7 +13,7 @@
   <key>CFBundlePackageType</key>
   <string>BNDL</string>
   <key>CFBundleShortVersionString</key>
-  <string>4.14.0</string>
+  <string>4.15.0</string>
   <key>CFBundleSignature</key>
   <string>????</string>
   <key>CFBundleVersion</key>
diff --git a/Test App/Pods/Target Support Files/iOSDFULibrary/iOSDFULibrary-Info.plist b/Test App/Pods/Target Support Files/iOSDFULibrary/iOSDFULibrary-Info.plist
index 8afb3e66..2d7d8e5a 100644
--- a/Test App/Pods/Target Support Files/iOSDFULibrary/iOSDFULibrary-Info.plist	
+++ b/Test App/Pods/Target Support Files/iOSDFULibrary/iOSDFULibrary-Info.plist	
@@ -15,7 +15,7 @@
   <key>CFBundlePackageType</key>
   <string>FMWK</string>
   <key>CFBundleShortVersionString</key>
-  <string>4.14.0</string>
+  <string>4.15.0</string>
   <key>CFBundleSignature</key>
   <string>????</string>
   <key>CFBundleVersion</key>
diff --git a/changelog.md b/changelog.md
index 86f28f47..31474beb 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,8 +1,11 @@
 ### Changelog
+- **4.15.0**
+   - Fix [security vulnerability](https://github.com/weichsel/ZIPFoundation/issues/281) in ZipFoundation (#527, #530).
+   
 - **4.14.0**
-   - Breaking change: Framework renamed from *iOSDFULibrary* to *NordicDFU*
-   - Refactoring: Folders with the library and sample apps were renamed
-   - Improvement: Privacy Manifest added
+   - Breaking change: Framework renamed from *iOSDFULibrary* to *NordicDFU*.
+   - Refactoring: Folders with the library and sample apps were renamed.
+   - Improvement: Privacy Manifest added.
    
 - **4.13.0**
    - Breaking change: Creating DFUFirmware may now throw an error, instead of returning nil (#486).
diff --git a/iOSDFULibrary.podspec b/iOSDFULibrary.podspec
index 92d60994..9606c01b 100644
--- a/iOSDFULibrary.podspec
+++ b/iOSDFULibrary.podspec
@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
   s.name             = "iOSDFULibrary"
   s.module_name      = 'NordicDFU'
-  s.version          = "4.14.0"
+  s.version          = "4.15.0"
   s.summary          = "This repository contains a library to perform Device Firmware Update on the nRF5x devices."
   s.description      = <<-DESC
 The nRF5x Series chips are flash-based SoCs, and as such they represent the most flexible solution available. A key feature of the nRF5x Series and their associated software architecture and S-Series SoftDevices is the possibility for Over-The-Air Device Firmware Upgrade (OTA-DFU). See Figure 1. OTA-DFU allows firmware upgrades to be issued and downloaded to products in the field via the cloud and so enables OEMs to fix bugs and introduce new features to products that are already out on the market. This brings added security and flexibility to product development when using the nRF5x Series SoCs.