diff --git a/Modules/CPU/readers.swift b/Modules/CPU/readers.swift
index 8851b571..f4b10732 100644
--- a/Modules/CPU/readers.swift
+++ b/Modules/CPU/readers.swift
@@ -303,7 +303,13 @@ public class FrequencyReader: Reader<CPU_Frequency> {
     private var prev: (samples: CFDictionary, time: TimeInterval)? = nil
     
     private let measurementCount: Int = 4
-    private var isReading: Bool = false
+    private let isReadingQueue = DispatchQueue(label: "com.example.isReadingQueue")
+    
+    private var _isReading: Bool = false
+    private var isReading: Bool {
+        get { self.isReadingQueue.sync { self._isReading } }
+        set { self.isReadingQueue.sync { self._isReading = newValue } }
+    }
     
     private struct IOSample {
         let group: String
diff --git a/Stats.xcodeproj/project.pbxproj b/Stats.xcodeproj/project.pbxproj
index fdd238fd..be90b7ab 100644
--- a/Stats.xcodeproj/project.pbxproj
+++ b/Stats.xcodeproj/project.pbxproj
@@ -2867,7 +2867,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.15;
-				MARKETING_VERSION = 2.11.39;
+				MARKETING_VERSION = 2.11.40;
 				OTHER_LDFLAGS = "";
 				PRODUCT_BUNDLE_IDENTIFIER = eu.exelban.Stats;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -2904,7 +2904,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.15;
-				MARKETING_VERSION = 2.11.39;
+				MARKETING_VERSION = 2.11.40;
 				OTHER_LDFLAGS = "";
 				PRODUCT_BUNDLE_IDENTIFIER = eu.exelban.Stats;
 				PRODUCT_NAME = "$(TARGET_NAME)";
diff --git a/Stats/Supporting Files/Info.plist b/Stats/Supporting Files/Info.plist
index 355427be..3cd0d66b 100755
--- a/Stats/Supporting Files/Info.plist	
+++ b/Stats/Supporting Files/Info.plist	
@@ -17,7 +17,7 @@
 	<key>CFBundleShortVersionString</key>
 	<string>$(MARKETING_VERSION)</string>
 	<key>CFBundleVersion</key>
-	<string>694</string>
+	<string>696</string>
 	<key>Description</key>
 	<string>Simple macOS system monitor in your menu bar</string>
 	<key>LSApplicationCategoryType</key>
diff --git a/Widgets/Supporting Files/Info.plist b/Widgets/Supporting Files/Info.plist
index 3978a5f5..f1c9e4a6 100644
--- a/Widgets/Supporting Files/Info.plist	
+++ b/Widgets/Supporting Files/Info.plist	
@@ -11,9 +11,9 @@
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.11.39</string>
+	<string>2.11.40</string>
 	<key>CFBundleVersion</key>
-	<string>694</string>
+	<string>696</string>
 	<key>NSExtension</key>
 	<dict>
 		<key>NSExtensionPointIdentifier</key>