diff --git a/damus.xcodeproj/project.pbxproj b/damus.xcodeproj/project.pbxproj
index f1220f4b..46bcfa1f 100644
--- a/damus.xcodeproj/project.pbxproj
+++ b/damus.xcodeproj/project.pbxproj
@@ -6251,6 +6251,7 @@
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_OBJC_BRIDGING_HEADER = "damus-c/damus-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_STRICT_CONCURRENCY = complete;
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
@@ -6300,6 +6301,7 @@
 				SUPPORTS_MAC_DESIGNED_FOR_IPHONE_IPAD = YES;
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_OBJC_BRIDGING_HEADER = "damus-c/damus-Bridging-Header.h";
+				SWIFT_STRICT_CONCURRENCY = complete;
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};