diff --git a/www/tor-browser/browser/Makefile b/www/tor-browser/browser/Makefile
index 48acd1c87d1..316b47eb156 100644
--- a/www/tor-browser/browser/Makefile
+++ b/www/tor-browser/browser/Makefile
@@ -10,6 +10,7 @@ MOZILLA_PROJECT =	${BROWSER_NAME}
 MOZILLA_CODENAME =	browser
 TL_VERSION =		0.2.33
 HE_VERSION =		2021.4.15
+REVISION =		0
 
 EXTRACT_SUFX =		.tar.xz
 PATCHORIG =		.pat.orig
diff --git a/www/tor-browser/browser/patches/patch-gfx_webrender_bindings_webrender_ffi_h b/www/tor-browser/browser/patches/patch-gfx_webrender_bindings_webrender_ffi_h
new file mode 100644
index 00000000000..964d1f5fea7
--- /dev/null
+++ b/www/tor-browser/browser/patches/patch-gfx_webrender_bindings_webrender_ffi_h
@@ -0,0 +1,18 @@
+Workaround for "error: redefinition of 'ROOT_CLIP_CHAIN'" with newer cbindgen.
+
+https://hg.mozilla.org/mozilla-central/diff/51947744ce12247f378a1db2379ffaad3fcd18c3/gfx/webrender_bindings/webrender_ffi.h
+https://bugzilla.mozilla.org/show_bug.cgi?id=1773259
+https://github.com/eqrion/cbindgen/issues/767#issuecomment-1153125949
+
+Index: gfx/webrender_bindings/webrender_ffi.h
+--- gfx/webrender_bindings/webrender_ffi.h.orig
++++ gfx/webrender_bindings/webrender_ffi.h
+@@ -77,8 +77,6 @@ struct WrPipelineInfo;
+ struct WrPipelineIdAndEpoch;
+ using WrPipelineIdEpochs = nsTArray<WrPipelineIdAndEpoch>;
+ 
+-const uint64_t ROOT_CLIP_CHAIN = ~0;
+-
+ }  // namespace wr
+ }  // namespace mozilla
+