diff --git a/.gitignore b/.gitignore
index d309566..3470aab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -308,3 +308,4 @@ thunderbird-langpacks-3.1.2-20100803.tar.bz2
 /lightning-langpacks-68.12.0.tar.xz
 /thunderbird-78.3.1.source.tar.xz
 /thunderbird-langpacks-78.3.1-20200930.tar.xz
+/cbindgen-vendor-0.14.3.tar.xz
diff --git a/sources b/sources
index a1aa120..7662177 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,3 @@
 SHA512 (thunderbird-78.3.1.source.tar.xz) = 16b05e51776ba16503bc5fba02a6d0b5050a206e264a4707544354ad76af61902fd2dcf5d97b82b432dc69362ccd18543a0acccd80e06648e6c6f470886da450
 SHA512 (thunderbird-langpacks-78.3.1-20200930.tar.xz) = 649ed59bdf7b988ca482b3bdb1dd2ea31741daeacc17c783f54e3fc65ac4ac17569d2cc54f357752bd0835914db5f59d638a781634d89a10acd3eee2acb9eb94
+SHA512 (cbindgen-vendor-0.14.3.tar.xz) = 33c8d28547674121f690eea0d3ebac33926a39caacac787bf8ed8b346478822e74da5a4a1f57ab4df4105fa8376739a2ece888845a85bc5712aaed20e4a508bc
diff --git a/thunderbird.spec b/thunderbird.spec
index 307f9d9..8585475 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -95,7 +95,7 @@ Source0:        ftp://ftp.mozilla.org/pub/thunderbird/releases/%{version}%{?pre_
 Source1:        thunderbird-langpacks-%{version}-20200930.tar.xz
 %endif
 Source3:        get-calendar-langpacks.sh
-Source4:        cbindgen-vendor.tar.xz
+Source4:        cbindgen-vendor-0.14.3.tar.xz
 
 Source10:       thunderbird-mozconfig
 Source11:       thunderbird-mozconfig-branded