diff --git a/build-mac/generated-files-asn1.txt b/build-mac/generated-files-asn1.txt
index 2799dc0e..a6e3acf6 100644
--- a/build-mac/generated-files-asn1.txt
+++ b/build-mac/generated-files-asn1.txt
@@ -74,6 +74,8 @@ $(SRCROOT)/../asn.1/Rollback.c
 $(SRCROOT)/../asn.1/Rollback.h
 $(SRCROOT)/../asn.1/Sync.c
 $(SRCROOT)/../asn.1/Sync.h
+$(SRCROOT)/../asn.1/SynchronizeGroupKeys.c
+$(SRCROOT)/../asn.1/SynchronizeGroupKeys.h
 $(SRCROOT)/../asn.1/TID.c
 $(SRCROOT)/../asn.1/TID.h
 $(SRCROOT)/../asn.1/UTF8String.c
diff --git a/build-mac/pEpEngine.xcodeproj/project.pbxproj b/build-mac/pEpEngine.xcodeproj/project.pbxproj
index d7e2da05..2c7a0e1f 100644
--- a/build-mac/pEpEngine.xcodeproj/project.pbxproj
+++ b/build-mac/pEpEngine.xcodeproj/project.pbxproj
@@ -140,6 +140,8 @@
 		15B0381222B2B823002D664C /* OwnKeysOfferer.h in Headers */ = {isa = PBXBuildFile; fileRef = 15B037A722B2B822002D664C /* OwnKeysOfferer.h */; };
 		15B0381322B2B823002D664C /* asn_application.h in Headers */ = {isa = PBXBuildFile; fileRef = 15B037A822B2B822002D664C /* asn_application.h */; };
 		15B0381422B2B823002D664C /* asn_SEQUENCE_OF.h in Headers */ = {isa = PBXBuildFile; fileRef = 15B037A922B2B822002D664C /* asn_SEQUENCE_OF.h */; };
+		15B75BE223FA9F9D00DAE976 /* SynchronizeGroupKeys.c in Sources */ = {isa = PBXBuildFile; fileRef = 15B75BDC23FA9F9D00DAE976 /* SynchronizeGroupKeys.c */; };
+		15B75BE323FA9F9D00DAE976 /* SynchronizeGroupKeys.h in Headers */ = {isa = PBXBuildFile; fileRef = 15B75BE123FA9F9D00DAE976 /* SynchronizeGroupKeys.h */; };
 		430BCC482015EE800077E998 /* pEp_string.h in Headers */ = {isa = PBXBuildFile; fileRef = 430BCC462015EE800077E998 /* pEp_string.h */; };
 		430BCC492015EE800077E998 /* pEp_string.c in Sources */ = {isa = PBXBuildFile; fileRef = 430BCC472015EE800077E998 /* pEp_string.c */; };
 		430D258B1C9ED75A00B94535 /* blacklist.c in Sources */ = {isa = PBXBuildFile; fileRef = 430D258A1C9ED75A00B94535 /* blacklist.c */; };
@@ -390,6 +392,8 @@
 		15B037A722B2B822002D664C /* OwnKeysOfferer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = OwnKeysOfferer.h; path = ../asn.1/OwnKeysOfferer.h; sourceTree = "<group>"; };
 		15B037A822B2B822002D664C /* asn_application.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = asn_application.h; path = ../asn.1/asn_application.h; sourceTree = "<group>"; };
 		15B037A922B2B822002D664C /* asn_SEQUENCE_OF.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = asn_SEQUENCE_OF.h; path = ../asn.1/asn_SEQUENCE_OF.h; sourceTree = "<group>"; };
+		15B75BDC23FA9F9D00DAE976 /* SynchronizeGroupKeys.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; name = SynchronizeGroupKeys.c; path = ../asn.1/SynchronizeGroupKeys.c; sourceTree = "<group>"; };
+		15B75BE123FA9F9D00DAE976 /* SynchronizeGroupKeys.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = SynchronizeGroupKeys.h; path = ../asn.1/SynchronizeGroupKeys.h; sourceTree = "<group>"; };
 		430BCC462015EE800077E998 /* pEp_string.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = pEp_string.h; path = ../src/pEp_string.h; sourceTree = "<group>"; };
 		430BCC472015EE800077E998 /* pEp_string.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; name = pEp_string.c; path = ../src/pEp_string.c; sourceTree = "<group>"; };
 		430D258A1C9ED75A00B94535 /* blacklist.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; name = blacklist.c; path = ../src/blacklist.c; sourceTree = "<group>"; };
@@ -544,6 +548,8 @@
 		6406CE811CE382F400C14D77 /* asn.1 */ = {
 			isa = PBXGroup;
 			children = (
+				15B75BDC23FA9F9D00DAE976 /* SynchronizeGroupKeys.c */,
+				15B75BE123FA9F9D00DAE976 /* SynchronizeGroupKeys.h */,
 				4378C79023D1AF1700D1AF3F /* ElectGroupKeyResetLeader.c */,
 				4378C78B23D1AF1700D1AF3F /* ElectGroupKeyResetLeader.h */,
 				43188AB023C4B6B9008EF79C /* Command.c */,
@@ -882,6 +888,7 @@
 				15B037F122B2B822002D664C /* OCTET_STRING.h in Headers */,
 				15B037CE22B2B822002D664C /* Hash.h in Headers */,
 				15B037EE22B2B822002D664C /* der_encoder.h in Headers */,
+				15B75BE323FA9F9D00DAE976 /* SynchronizeGroupKeys.h in Headers */,
 				159EF42922B6D3E900149C0C /* pgp_sequoia_internal.h in Headers */,
 				15B037BD22B2B822002D664C /* CommitAcceptOfferer.h in Headers */,
 				15B037CA22B2B822002D664C /* PrintableString.h in Headers */,
@@ -1135,6 +1142,7 @@
 				43370833203C075A004E6547 /* sqlite3.c in Sources */,
 				15B0380122B2B822002D664C /* asn_SET_OF.c in Sources */,
 				15B037DE22B2B822002D664C /* KeySync.c in Sources */,
+				15B75BE223FA9F9D00DAE976 /* SynchronizeGroupKeys.c in Sources */,
 				15B037C322B2B822002D664C /* constr_SEQUENCE_OF.c in Sources */,
 				15B037DF22B2B822002D664C /* IdentityList.c in Sources */,
 				15B037AE22B2B822002D664C /* NegotiationOpen.c in Sources */,