diff --git a/Branch-SDK/BNCKeyChain.m b/Branch-SDK/BNCKeyChain.m
index da9c880d3..51a4eba29 100644
--- a/Branch-SDK/BNCKeyChain.m
+++ b/Branch-SDK/BNCKeyChain.m
@@ -92,7 +92,7 @@ + (NSDate *) retrieveDateForService:(NSString *)service key:(NSString *)key erro
     id value = nil;
     if (valueData) {
         @try {
-            if (@available(iOS 12.0, *)) {
+            if (@available(iOS 11.0, tvOS 11.0, *)) {
                 value = [NSKeyedUnarchiver unarchivedObjectOfClass:[NSDate class] fromData:(__bridge NSData*)valueData error:NULL];
             } else {
 #if __IPHONE_OS_VERSION_MIN_REQUIRED < 12000
@@ -120,7 +120,7 @@ + (NSError *) storeDate:(NSDate *)date
 
     NSData* valueData = nil;
     @try {
-        if (@available( iOS 12.0, *)) {
+        if (@available(iOS 11.0, tvOS 11.0, *)) {
             valueData = [NSKeyedArchiver archivedDataWithRootObject:date requiringSecureCoding:YES error:NULL];
         } else {
 #if __IPHONE_OS_VERSION_MIN_REQUIRED < 12000
diff --git a/Branch-SDK/BNCPreferenceHelper.m b/Branch-SDK/BNCPreferenceHelper.m
index ec76e71f1..83b446afe 100644
--- a/Branch-SDK/BNCPreferenceHelper.m
+++ b/Branch-SDK/BNCPreferenceHelper.m
@@ -744,7 +744,7 @@ - (void)persistPrefsToDisk {
         if (!self.persistenceDict) return;
         NSData *data = nil;
         @try {
-            if (@available( iOS 12.0, *)) {
+            if (@available(iOS 11.0, tvOS 11.0, *)) {
                 data = [NSKeyedArchiver archivedDataWithRootObject:self.persistenceDict requiringSecureCoding:YES error:NULL];
             } else {
 #if __IPHONE_OS_VERSION_MIN_REQUIRED < 12000
@@ -787,7 +787,7 @@ - (NSMutableDictionary *)persistenceDict {
                 NSError *error = nil;
                 NSData *data = [NSData dataWithContentsOfURL:self.class.URLForPrefsFile options:0 error:&error];
                 if (!error && data) {
-                    if (@available(iOS 12.0, *)) {
+                    if (@available(iOS 11.0, tvOS 11.0, *)) {
                         persistenceDict = [NSKeyedUnarchiver unarchivedObjectOfClass:[BNCServerRequest class] fromData:data error:NULL];
                     } else {
 #if __IPHONE_OS_VERSION_MIN_REQUIRED < 12000
diff --git a/Branch-SDK/BNCServerRequestQueue.m b/Branch-SDK/BNCServerRequestQueue.m
index 7d9d5784e..5763f91eb 100755
--- a/Branch-SDK/BNCServerRequestQueue.m
+++ b/Branch-SDK/BNCServerRequestQueue.m
@@ -324,7 +324,7 @@ - (NSData *)oldArchiveQueue:(NSArray<BNCServerRequest *> *)queue {
 - (NSData *)archiveObject:(NSObject *)object {
     NSData *data = nil;
     NSError *error = nil;
-    if (@available(iOS 12.0, *)) {
+    if (@available(iOS 11.0, tvOS 11.0, *)) {
         data = [NSKeyedArchiver archivedDataWithRootObject:object requiringSecureCoding:YES error:&error];
         
         if (!data && error) {
@@ -381,7 +381,7 @@ - (void)retrieve {
 
 - (id)unarchiveObjectFromData:(NSData *)data {
     id object = nil;
-    if (@available(iOS 12.0, *)) {
+    if (@available(iOS 11.0, tvOS 11.0, *)) {
         object = [NSKeyedUnarchiver unarchivedObjectOfClasses:[BNCServerRequestQueue encodableClasses] fromData:data error:nil];
 
     } else {