diff --git a/.gitignore b/.gitignore
index d8a0db4..b9678b6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 /cxxbridge-macro-1.0.57.crate
 /cxxbridge-macro-1.0.60.crate
 /cxxbridge-macro-1.0.62.crate
+/cxxbridge-macro-1.0.63.crate
diff --git a/fix-variants-from-headers-build.patch b/fix-variants-from-headers-build.patch
new file mode 100644
index 0000000..89b3e9f
--- /dev/null
+++ b/fix-variants-from-headers-build.patch
@@ -0,0 +1,28 @@
+From cf5bbe629ee54649e5ccb195bfd10e3c3b03ae53 Mon Sep 17 00:00:00 2001
+From: David Tolnay <dtolnay@gmail.com>
+Date: Tue, 18 Jan 2022 17:21:08 -0800
+Subject: [PATCH] Fix variants_from_header build
+
+---
+ macro/src/load.rs | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/macro/src/load.rs b/macro/src/load.rs
+index d769ebf6..baf88413 100644
+--- a/macro/src/load.rs
++++ b/macro/src/load.rs
+@@ -1,5 +1,6 @@
+ use crate::clang::{Clang, Node};
+ use crate::syntax::attrs::OtherAttrs;
++use crate::syntax::cfg::CfgExpr;
+ use crate::syntax::namespace::Namespace;
+ use crate::syntax::report::Errors;
+ use crate::syntax::{Api, Discriminant, Doc, Enum, EnumRepr, ForeignName, Pair, Variant};
+@@ -207,6 +208,7 @@ fn traverse<'a>(
+                     }
+                 };
+                 enm.variants.push(Variant {
++                    cfg: CfgExpr::Unconditional,
+                     doc: Doc::new(),
+                     attrs: OtherAttrs::none(),
+                     name: Pair {
diff --git a/rust-cxxbridge-macro.spec b/rust-cxxbridge-macro.spec
index fe47f3e..c0e3ac8 100644
--- a/rust-cxxbridge-macro.spec
+++ b/rust-cxxbridge-macro.spec
@@ -5,7 +5,7 @@
 %global crate cxxbridge-macro
 
 Name:           rust-%{crate}
-Version:        1.0.62
+Version:        1.0.63
 Release:        %autorelease
 Summary:        Implementation detail of the cxx crate
 
@@ -14,6 +14,10 @@ License:        MIT or ASL 2.0
 URL:            https://crates.io/crates/cxxbridge-macro
 Source:         %{crates_source}
 
+# Backports: Remove on update
+# https://github.com/dtolnay/cxx/commit/cf5bbe629ee54649e5ccb195bfd10e3c3b03ae53.patch
+Patch:          fix-variants-from-headers-build.patch
+
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
@@ -121,7 +125,7 @@ use the "serde_json" feature of the "%{crate}" crate.
 %ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
 
 %prep
-%autosetup -n %{crate}-%{version_no_tilde} -p1
+%autosetup -n %{crate}-%{version_no_tilde} -p2
 %cargo_prep
 
 %generate_buildrequires
diff --git a/sources b/sources
index 15ab09c..2012086 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (cxxbridge-macro-1.0.62.crate) = 14f4f68f1d8cd1e0a708ca2387244d18c59021bf011812825dc96eea5df5b297cca91f9497c1a2afd4815a9367e8302941eb5c70507a9cfc60405760f7ddaf56
+SHA512 (cxxbridge-macro-1.0.63.crate) = ce804528bc33e783da9daf7a6d48efd8a5ae3f9ba08a1b3c16e6b6b4f8c6b979def354755bbd5161dadb9ab0f971c9398516f9d52bd86c432a86f30f53330639