diff --git a/mac/Keyman4Mac/Keyman4Mac.xcodeproj/project.pbxproj b/mac/Keyman4Mac/Keyman4Mac.xcodeproj/project.pbxproj
index ff087f0544..bd4cc6a16b 100644
--- a/mac/Keyman4Mac/Keyman4Mac.xcodeproj/project.pbxproj
+++ b/mac/Keyman4Mac/Keyman4Mac.xcodeproj/project.pbxproj
@@ -399,7 +399,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				ONLY_ACTIVE_ARCH = NO;
 				PRODUCT_BUNDLE_IDENTIFIER = org.sil.Keyman4Mac;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -425,7 +425,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_BUNDLE_IDENTIFIER = org.sil.Keyman4Mac;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PRODUCT_VERSION = 0.0.1;
@@ -451,6 +451,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Keyman4Mac.app/Contents/MacOS/Keyman4Mac";
 			};
@@ -471,6 +472,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Keyman4Mac.app/Contents/MacOS/Keyman4Mac";
 			};
diff --git a/mac/Keyman4MacIM/Keyman4MacIM.xcodeproj/project.pbxproj b/mac/Keyman4MacIM/Keyman4MacIM.xcodeproj/project.pbxproj
index cf83375ba8..3ba5904757 100644
--- a/mac/Keyman4MacIM/Keyman4MacIM.xcodeproj/project.pbxproj
+++ b/mac/Keyman4MacIM/Keyman4MacIM.xcodeproj/project.pbxproj
@@ -1314,7 +1314,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				ONLY_ACTIVE_ARCH = YES;
 				OTHER_CODE_SIGN_FLAGS = "--timestamp --verbose";
 				PRODUCT_BUNDLE_IDENTIFIER = "keyman.inputmethod.$(PRODUCT_NAME:rfc1034identifier)";
@@ -1358,7 +1358,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				OTHER_CODE_SIGN_FLAGS = "--timestamp --verbose";
 				PRODUCT_BUNDLE_IDENTIFIER = "keyman.inputmethod.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -1402,7 +1402,7 @@
 					"@loader_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_BUNDLE_IDENTIFIER = org.sil.consoleTestbed.KeymanTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -1436,7 +1436,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_BUNDLE_IDENTIFIER = org.sil.consoleTestbed.KeymanTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
diff --git a/mac/KeymanEngine4Mac/KeymanEngine4Mac.xcodeproj/project.pbxproj b/mac/KeymanEngine4Mac/KeymanEngine4Mac.xcodeproj/project.pbxproj
index 0a46301b7f..918dc73325 100644
--- a/mac/KeymanEngine4Mac/KeymanEngine4Mac.xcodeproj/project.pbxproj
+++ b/mac/KeymanEngine4Mac/KeymanEngine4Mac.xcodeproj/project.pbxproj
@@ -685,7 +685,7 @@
 					"$(PROJECT_DIR)/../../core/build/mac-x86_64/debug/subprojects/icu/source/i18n",
 					"$(PROJECT_DIR)/../../core/build/mac/debug",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				ONLY_ACTIVE_ARCH = NO;
 				"OTHER_LDFLAGS[arch=*]" = "-lstdc++";
 				PRODUCT_BUNDLE_IDENTIFIER = org.sil.KeymanEngine4Mac;
@@ -728,7 +728,7 @@
 					"$(PROJECT_DIR)/../../core/build/mac-x86_64/release/subprojects/icu/source/i18n",
 					"$(PROJECT_DIR)/../../core/build/mac/release",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				"OTHER_LDFLAGS[arch=*]" = "-lstdc++";
 				PRODUCT_BUNDLE_IDENTIFIER = org.sil.KeymanEngine4Mac;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -753,6 +753,7 @@
 				);
 				INFOPLIST_FILE = KeymanEngine4MacTests/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_BUNDLE_IDENTIFIER = "Tavultesoft.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
@@ -768,6 +769,7 @@
 				);
 				INFOPLIST_FILE = KeymanEngine4MacTests/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_BUNDLE_IDENTIFIER = "Tavultesoft.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};