diff --git a/Secretive.xcodeproj/project.pbxproj b/Secretive.xcodeproj/project.pbxproj
index 852aaa7..9b8ff04 100644
--- a/Secretive.xcodeproj/project.pbxproj
+++ b/Secretive.xcodeproj/project.pbxproj
@@ -1324,6 +1324,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.Secretive.SecretKit;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -1354,6 +1355,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.Secretive.SecretKit;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -1376,6 +1378,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.SecretKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
@@ -1395,6 +1398,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.SecretKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
@@ -1421,6 +1425,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.Brief;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -1450,6 +1455,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.Brief;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -1480,6 +1486,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.Brief;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -1636,6 +1643,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.Secretive.SecretKit;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -1659,6 +1667,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.SecretKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -1685,6 +1694,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.SecretAgentKit;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -1708,6 +1718,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.SecretAgentKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -1735,6 +1746,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.SecretAgentKit;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -1765,6 +1777,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.SecretAgentKit;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -1787,6 +1800,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.SecretAgentKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
@@ -1806,6 +1820,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_BUNDLE_IDENTIFIER = com.maxgoedjen.SecretAgentKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;