diff --git a/orca.spec b/orca.spec
index 13c1934..afd631c 100644
--- a/orca.spec
+++ b/orca.spec
@@ -30,6 +30,7 @@ BuildRequires:  speech-dispatcher-python
 BuildRequires:  gtk3-devel
 BuildRequires:  itstool
 BuildRequires:  python3
+BuildRequires:  pygobject3
 Obsoletes:      gnopernicus
 Provides:       gnopernicus