diff --git a/debian/apertis/copyright.whitelist b/debian/apertis/copyright.whitelist
index d6494947c4206126393a78f45ae61a03d7b71c01..767fd95582ca61138df6d8c240f218d27d29fa61 100644
--- a/debian/apertis/copyright.whitelist
+++ b/debian/apertis/copyright.whitelist
@@ -1,3 +1,9 @@
 # Test program, not affecting artifacts
 debian/tests/run-with-display
 tests/testscrolledge.c
+# GPL-3 code, not used to build the Debian packages
+subprojects/cairo/util/cairo-fdr/fdr.c
+subprojects/cairo/util/cairo-trace/*
+subprojects/cairo/util/cairo-trace/lookup-symbol.c
+subprojects/cairo/util/cairo-trace/lookup-symbol.h
+subprojects/cairo/util/cairo-trace/trace.c