diff --git a/gio/gdbus-2.0/codegen/Makefile.am b/gio/gdbus-2.0/codegen/Makefile.am
index 145ccba83..cd9983e36 100644
--- a/gio/gdbus-2.0/codegen/Makefile.am
+++ b/gio/gdbus-2.0/codegen/Makefile.am
@@ -22,7 +22,7 @@ bin_SCRIPTS += gdbus-codegen
 CLEANFILES += gdbus-codegen
 EXTRA_DIST += gdbus-codegen.in
 
-gdbus-codegen: gdbus-codegen.in Makefile
+gdbus-codegen: gdbus-codegen.in Makefile $(codegen_PYTHON)
 	$(AM_V_GEN) sed -e 's,@libdir\@,$(libdir),' $< > $@.tmp && mv $@.tmp $@
 	@chmod a+x $@
 
diff --git a/gio/tests/Makefile.am b/gio/tests/Makefile.am
index 8acc4dbc9..867b18abf 100644
--- a/gio/tests/Makefile.am
+++ b/gio/tests/Makefile.am
@@ -267,7 +267,7 @@ gdbus_close_pending_SOURCES = gdbus-close-pending.c gdbus-sessionbus.c gdbus-ses
 gdbus_close_pending_LDADD = $(progs_ldadd)
 
 if OS_UNIX
-gdbus-test-codegen-generated.h gdbus-test-codegen-generated.c : test-codegen.xml
+gdbus-test-codegen-generated.h gdbus-test-codegen-generated.c : test-codegen.xml Makefile $(top_builddir)/gio/gdbus-2.0/codegen/gdbus-codegen
 	$(AM_V_GEN) UNINSTALLED_GLIB_SRCDIR=$(top_srcdir) \
 		UNINSTALLED_GLIB_BUILDDIR=$(top_builddir) \
 		$(PYTHON) $(top_builddir)/gio/gdbus-2.0/codegen/gdbus-codegen \
diff --git a/gio/tests/gdbus-object-manager-example/Makefile.am b/gio/tests/gdbus-object-manager-example/Makefile.am
index 5e6eb9ae2..9861d0e08 100644
--- a/gio/tests/gdbus-object-manager-example/Makefile.am
+++ b/gio/tests/gdbus-object-manager-example/Makefile.am
@@ -21,7 +21,7 @@ GDBUS_GENERATED = 										\
 	gdbus-example-objectmanager-generated-org.gtk.GDBus.Example.ObjectManager.Cat.xml 	\
 	$(NULL)
 
-$(GDBUS_GENERATED) : gdbus-example-objectmanager.xml
+$(GDBUS_GENERATED) : gdbus-example-objectmanager.xml Makefile $(top_builddir)/gio/gdbus-2.0/codegen/gdbus-codegen
 	$(AM_V_GEN) UNINSTALLED_GLIB_SRCDIR=$(top_srcdir) \
 		UNINSTALLED_GLIB_BUILDDIR=$(top_builddir) \
 		$(PYTHON) $(top_builddir)/gio/gdbus-2.0/codegen/gdbus-codegen \