diff --git a/obs-service-source_validator.changes b/obs-service-source_validator.changes
index 710ccad..113651b 100644
--- a/obs-service-source_validator.changes
+++ b/obs-service-source_validator.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Aug  4 12:09:42 UTC 2022 - Dirk Müller <dmueller@suse.com>
+
+- require patch for patch-format checking
+
 -------------------------------------------------------------------
 Thu Aug 04 08:20:29 UTC 2022 - dmueller@suse.com
 
diff --git a/obs-service-source_validator.spec b/obs-service-source_validator.spec
index bfc80cf..45d4c4a 100644
--- a/obs-service-source_validator.spec
+++ b/obs-service-source_validator.spec
@@ -35,6 +35,7 @@ BuildArch:      noarch
 BuildRequires:  build
 Requires:       /usr/bin/xmllint
 Requires:       build
+Requires:       patch
 Requires:       perl-TimeDate
 Provides:       osc-source_validator = %version
 Obsoletes:      osc-source_validator <= 0.1