diff --git a/libarcus.spec b/libarcus.spec
index 572f5c9..8961207 100644
--- a/libarcus.spec
+++ b/libarcus.spec
@@ -14,6 +14,8 @@ BuildRequires:  protobuf-devel
 BuildRequires:  python3-devel
 BuildRequires:  python3-protobuf
 BuildRequires:  python3-sip-devel
+# patch1 introduces additional dependency
+BuildRequires:  python3-qt5-base
 BuildRequires:  /usr/bin/sip
 BuildRequires:  cmake
 BuildRequires:  gcc-c++