diff --git a/debian/patches/series b/debian/patches/series
index 57c777c5..2d2f27b8 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -146,3 +146,4 @@ revert-update-doc.diff
 unwind-force-pthread-dl.diff
 force-sse2-compiler-rt.diff
 bolt-disable-emit-relocs.patch
+protobuf_3.21.patch