diff --git a/RollbarCommon.podspec b/RollbarCommon.podspec
index 0085bcd..6784e16 100644
--- a/RollbarCommon.podspec
+++ b/RollbarCommon.podspec
@@ -7,7 +7,7 @@
 
 Pod::Spec.new do |s|
 
-    s.version      = "2.0.0-alpha23"
+    s.version      = "2.0.0-alpha24"
     s.name         = "RollbarCommon"
     s.summary      = "Application or client side SDK for accessing the Rollbar API Server."
     s.description  = <<-DESC
diff --git a/RollbarCommon/Sources/RollbarCommon/include/RollbarCrashCollectorBase.h b/RollbarCommon/Sources/RollbarCommon/include/RollbarCrashCollectorBase.h
index 81075e0..28aa14f 100644
--- a/RollbarCommon/Sources/RollbarCommon/include/RollbarCrashCollectorBase.h
+++ b/RollbarCommon/Sources/RollbarCommon/include/RollbarCrashCollectorBase.h
@@ -5,6 +5,9 @@
 //  Created by Andrey Kornich on 2020-11-02.
 //
 
+#ifndef RollbarCrashCollectorBase_h
+#define RollbarCrashCollectorBase_h
+
 @import Foundation;
 
 #import "RollbarCrashCollectorProtocol.h"
@@ -26,3 +29,5 @@ NS_DESIGNATED_INITIALIZER;
 @end
 
 NS_ASSUME_NONNULL_END
+
+#endif /* RollbarCrashCollectorBase_h */
diff --git a/RollbarCommon/Sources/RollbarCommon/include/RollbarCrashReportData.h b/RollbarCommon/Sources/RollbarCommon/include/RollbarCrashReportData.h
index 32fa025..a20eed9 100644
--- a/RollbarCommon/Sources/RollbarCommon/include/RollbarCrashReportData.h
+++ b/RollbarCommon/Sources/RollbarCommon/include/RollbarCrashReportData.h
@@ -5,6 +5,9 @@
 //  Created by Andrey Kornich on 2020-10-27.
 //
 
+#ifndef RollbarCrashReportData_h
+#define RollbarCrashReportData_h
+
 @import Foundation;
 
 NS_ASSUME_NONNULL_BEGIN
@@ -26,3 +29,5 @@ NS_UNAVAILABLE;
 @end
 
 NS_ASSUME_NONNULL_END
+
+#endif //RollbarCrashReportData_h
diff --git a/RollbarCommon/Sources/RollbarCommon/include/RollbarReceptionist.h b/RollbarCommon/Sources/RollbarCommon/include/RollbarReceptionist.h
index ee55909..a1cc2d3 100644
--- a/RollbarCommon/Sources/RollbarCommon/include/RollbarReceptionist.h
+++ b/RollbarCommon/Sources/RollbarCommon/include/RollbarReceptionist.h
@@ -5,6 +5,9 @@
 //  Created by Andrey Kornich on 2020-10-08.
 //
 
+#ifndef RollbarReceptionist_h
+#define RollbarReceptionist_h
+
 @import Foundation;
 
 NS_ASSUME_NONNULL_BEGIN
@@ -67,3 +70,5 @@ typedef void (^RollbarReceptionistTaskBlock)(NSString *keyPath, id object, NSDic
 @end
 
 NS_ASSUME_NONNULL_END
+
+#endif //RollbarReceptionist_h
diff --git a/RollbarCommon/Sources/RollbarCommon/include/RollbarTaskDispatcher.h b/RollbarCommon/Sources/RollbarCommon/include/RollbarTaskDispatcher.h
index 3dbed49..88a59bb 100644
--- a/RollbarCommon/Sources/RollbarCommon/include/RollbarTaskDispatcher.h
+++ b/RollbarCommon/Sources/RollbarCommon/include/RollbarTaskDispatcher.h
@@ -5,7 +5,10 @@
 //  Created by Andrey Kornich on 2020-10-09.
 //
 
-#import <Foundation/Foundation.h>
+#ifndef RollbarTaskDispatcher_h
+#define RollbarTaskDispatcher_h
+
+@import Foundation;
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -54,3 +57,5 @@ typedef void (^RollbarTaskBlock)(id taskInput);
 @end
 
 NS_ASSUME_NONNULL_END
+
+#endif //RollbarTaskDispatcher_h
diff --git a/RollbarDeploys.podspec b/RollbarDeploys.podspec
index 9ba2876..d7de886 100644
--- a/RollbarDeploys.podspec
+++ b/RollbarDeploys.podspec
@@ -7,7 +7,7 @@
 
 Pod::Spec.new do |s|
 
-    s.version      = "2.0.0-alpha23"
+    s.version      = "2.0.0-alpha24"
     s.name         = "RollbarDeploys"
     s.summary      = "Application or client side SDK for accessing the Rollbar API Server."
     s.description  = <<-DESC
diff --git a/RollbarKSCrash.podspec b/RollbarKSCrash.podspec
index cb2cdd5..19efe67 100644
--- a/RollbarKSCrash.podspec
+++ b/RollbarKSCrash.podspec
@@ -7,7 +7,7 @@
 
 Pod::Spec.new do |s|
 
-    s.version      = "2.0.0-alpha23"
+    s.version      = "2.0.0-alpha24"
     s.name         = "RollbarKSCrash"
     s.summary      = "Application or client side SDK for accessing the Rollbar API Server."
     s.description  = <<-DESC
diff --git a/RollbarNotifier.podspec b/RollbarNotifier.podspec
index e9a7442..57e404a 100644
--- a/RollbarNotifier.podspec
+++ b/RollbarNotifier.podspec
@@ -7,7 +7,7 @@
 
 Pod::Spec.new do |s|
 
-    s.version      = "2.0.0-alpha23"
+    s.version      = "2.0.0-alpha24"
     s.name         = "RollbarNotifier"
     s.summary      = "Application or client side SDK for accessing the Rollbar API Server."
     s.description  = <<-DESC
diff --git a/RollbarNotifier/Sources/RollbarNotifier/DTOs/RollbarConfig.m b/RollbarNotifier/Sources/RollbarNotifier/DTOs/RollbarConfig.m
index e1aaaad..017ff28 100644
--- a/RollbarNotifier/Sources/RollbarNotifier/DTOs/RollbarConfig.m
+++ b/RollbarNotifier/Sources/RollbarNotifier/DTOs/RollbarConfig.m
@@ -22,7 +22,7 @@
 
 #pragma mark - constants
 
-static NSString * const NOTIFIER_VERSION = @"2.0.0-alpha23";
+static NSString * const NOTIFIER_VERSION = @"2.0.0-alpha24";
 
 static NSString * const NOTIFIER_NAME = @"rollbar-*os";
 
diff --git a/RollbarSDK.podspec b/RollbarSDK.podspec
index 6ffa045..b720914 100644
--- a/RollbarSDK.podspec
+++ b/RollbarSDK.podspec
@@ -9,7 +9,7 @@ Pod::Spec.new do |sdk|
 
     # Rollbar SDK:
     # ============
-    sdk.version      = "2.0.0-alpha23"
+    sdk.version      = "2.0.0-alpha24"
     sdk.name         = "RollbarSDK"
     sdk.summary      = "Application or client side SDK for accessing the Rollbar API Server."
     sdk.description  = <<-DESC