diff --git a/android/app/build.gradle b/android/app/build.gradle
index f99f5e1..9f17806 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -28,6 +28,19 @@ android {
     buildToolsVersion rootProject.ext.buildToolsVersion
     compileSdkVersion rootProject.compileSdkVersion
 
+    def releaseProps = new Properties()
+    def releasePropsFile = new File('./local.properties')
+    def hasReleaseSigning = false
+    if (releasePropsFile.canRead()) {
+        releaseProps.load(new FileInputStream(releasePropsFile))
+        hasReleaseSigning = [
+            "key.store",
+            "key.store.password",
+            "key.alias",
+            "key.alias.password"
+        ].every { releaseProps.containsKey(it) }
+    }
+
     namespace "com.mendix.developerapp"
     defaultConfig {
         applicationId "com.mendix.developerapp.mx10"
@@ -59,17 +72,13 @@ android {
             }
         }
         release {
-           Properties releaseProps = new Properties()
-           def propFile = new File('./local.properties')
-           if (propFile.canRead()) {
-               releaseProps.load(new FileInputStream(propFile))
-
+           if (hasReleaseSigning) {
                storeFile file(releaseProps["key.store"])
                storePassword releaseProps["key.store.password"]
                keyAlias releaseProps["key.alias"]
                keyPassword releaseProps["key.alias.password"]
            } else {
-               print 'local.properties not found'
+               print 'Release signing config missing; skipping signingConfig.release'
            }
         }
     }
@@ -78,7 +87,9 @@ android {
             signingConfig signingConfigs.debug
         }
         release {
-            signingConfig signingConfigs.release
+            if (hasReleaseSigning) {
+                signingConfig signingConfigs.release
+            }
             minifyEnabled enableProguardInReleaseBuilds
             proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
         }
diff --git a/ios/developerapp.xcodeproj/project.pbxproj b/ios/developerapp.xcodeproj/project.pbxproj
index 52e79da..ed134f7 100644
--- a/ios/developerapp.xcodeproj/project.pbxproj
+++ b/ios/developerapp.xcodeproj/project.pbxproj
@@ -805,7 +805,7 @@
 				CODE_SIGN_ENTITLEMENTS = DeveloperApp/DeveloperApp.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 606;
+				CURRENT_PROJECT_VERSION = 614;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = BC32QNM6AD;
 				ENABLE_BITCODE = NO;
@@ -839,7 +839,7 @@
 					"$(inherited)",
 					"$(PROJECT_DIR)",
 				);
-				MARKETING_VERSION = 11.5.0;
+				MARKETING_VERSION = 11.6.4;
 				OTHER_LDFLAGS = (
 					"$(inherited)",
 					"-ObjC",
@@ -868,7 +868,7 @@
 				CODE_SIGN_ENTITLEMENTS = DeveloperApp/DeveloperApp.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 606;
+				CURRENT_PROJECT_VERSION = 614;
 				DEVELOPMENT_TEAM = BC32QNM6AD;
 				ENABLE_BITCODE = NO;
 				ENABLE_NS_ASSERTIONS = YES;
@@ -901,7 +901,7 @@
 					"$(inherited)",
 					"$(PROJECT_DIR)",
 				);
-				MARKETING_VERSION = 11.5.0;
+				MARKETING_VERSION = 11.6.4;
 				OTHER_LDFLAGS = (
 					"$(inherited)",
 					"-ObjC",
@@ -1125,7 +1125,7 @@
 				CODE_SIGN_ENTITLEMENTS = DeveloperApp/DeveloperApp.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 606;
+				CURRENT_PROJECT_VERSION = 614;
 				DEVELOPMENT_TEAM = BC32QNM6AD;
 				ENABLE_BITCODE = NO;
 				ENABLE_NS_ASSERTIONS = YES;
@@ -1163,7 +1163,7 @@
 					"$(inherited)",
 					"$(PROJECT_DIR)",
 				);
-				MARKETING_VERSION = 11.5.0;
+				MARKETING_VERSION = 11.6.4;
 				OTHER_LDFLAGS = (
 					"$(inherited)",
 					"-ObjC",
diff --git a/package.json b/package.json
index 363abc1..8ce9dc1 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "license": "Apache-2.0",
   "store-versions": {
     "google-play": "11.5.0",
-    "apple-store": "11.5.0"
+    "apple-store": "11.6.4"
   },
   "private": true,
   "scripts": {