diff --git a/marble.spec b/marble.spec
index 3f0170e..a0ddcbc 100644
--- a/marble.spec
+++ b/marble.spec
@@ -3,7 +3,7 @@ Name:    marble
 Summary: Virtual globe and world atlas 
 Epoch:   1
 Version: 20.12.2
-Release: 2%{?dist}
+Release: 3%{?dist}
 
 License: LGPLv2+
 URL:     http://edu.kde.org/marble/
@@ -39,6 +39,7 @@ BuildRequires: kf5-rpm-macros
 BuildRequires: pkgconfig(libgps)
 %endif
 BuildRequires: pkgconfig(phonon4qt5)
+BuildRequires: pkgconfig(protobuf)
 BuildRequires: pkgconfig(Qt5Core)
 BuildRequires: pkgconfig(Qt5Xml)
 BuildRequires: pkgconfig(Qt5Network)
@@ -253,6 +254,9 @@ desktop-file-validate %{buildroot}%{_datadir}/applications/org.kde.marble-qt.des
 
 
 %changelog
+* Sun Feb 07 2021 Kevin Kofler <Kevin@tigcc.ticalc.org> - 1:20.12.2-3
+- add missing BuildRequires: pkgconfig(protobuf) (new optional dep in 20.12)
+
 * Sun Feb 07 2021 Kevin Kofler <Kevin@tigcc.ticalc.org> - 1:20.12.2-2
 - add missing BuildRequires on QtWebEngine (where supported) (kde#431152)
 - drop obsolete BuildRequires on QtWebKit, upstream dropped support years ago