diff --git a/lib/ipc/Makefile.am b/lib/ipc/Makefile.am
index 9338b141e..691517561 100644
--- a/lib/ipc/Makefile.am
+++ b/lib/ipc/Makefile.am
@@ -38,6 +38,10 @@ EXTRA_DIST = heim_ipc.defs heim_ipc_async.defs heim_ipc_reply.defs
 
 if have_gcd
 
+# We still use dispatch_get_current_queue(), which is deprecated, and that
+# stops building on recent OS X releases unless we disable this warning.
+WFLAGS += -Wno-deprecated-declarations
+
 heim_ipc.h heim_ipcUser.c heim_ipcServer.c heim_ipcServer.h: heim_ipc.defs
 	mig -header heim_ipc.h -user heim_ipcUser.c -sheader heim_ipcServer.h -server heim_ipcServer.c -I$(srcdir) $(srcdir)/heim_ipc.defs