diff --git a/Bugsnag.podspec.json b/Bugsnag.podspec.json
index 66fa9336b..4a435f4d7 100644
--- a/Bugsnag.podspec.json
+++ b/Bugsnag.podspec.json
@@ -1,6 +1,6 @@
 {
   "name": "Bugsnag",
-  "version": "5.17.2",
+  "version": "5.17.3",
   "summary": "Cocoa notifier for SDK for bugsnag.com",
   "homepage": "https://bugsnag.com",
   "license": "MIT",
@@ -9,7 +9,7 @@
   },
   "source": {
     "git": "https://github.com/bugsnag/bugsnag-cocoa.git",
-    "tag": "v5.17.2"
+    "tag": "v5.17.3"
   },
   "frameworks": ["Foundation", "SystemConfiguration"],
   "libraries": [
diff --git a/CHANGELOG.md b/CHANGELOG.md
index cdf22e698..51d38ade7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 Changelog
 =========
 
-## TBD
+## 5.17.3 (2018-12-19)
 
 ### Bug Fixes
 
diff --git a/Source/BugsnagNotifier.m b/Source/BugsnagNotifier.m
index a7caad8bc..36bfca04d 100644
--- a/Source/BugsnagNotifier.m
+++ b/Source/BugsnagNotifier.m
@@ -41,7 +41,7 @@
 #import <AppKit/AppKit.h>
 #endif
 
-NSString *const NOTIFIER_VERSION = @"5.17.2";
+NSString *const NOTIFIER_VERSION = @"5.17.3";
 NSString *const NOTIFIER_URL = @"https://github.com/bugsnag/bugsnag-cocoa";
 NSString *const BSTabCrash = @"crash";
 NSString *const BSAttributeDepth = @"depth";
diff --git a/VERSION b/VERSION
index 1c8b2cb56..997dfff82 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.17.2
+5.17.3