diff --git a/doxygen.spec b/doxygen.spec
index e7db7ce..65228e3 100644
--- a/doxygen.spec
+++ b/doxygen.spec
@@ -36,10 +36,6 @@ Source1: doxywizard.desktop
 # these icons are part of doxygen and converted from doxywizard.ico
 Source2: doxywizard-icons.tar.xz
 # upstream patches
-Patch1: doxgen-1.9.1-crash-when-parsing-config-file.patch
-Patch2: doxgen-1.9.1-crash-when-parsing-config-file-part2.patch
-Patch3: doxygen-1.9.1-Coverity_issues.patch
-Patch4: doxygen-1.9.1-crash_in_docparser.patch
 
 BuildRequires: %{_bindir}/python3
 BuildRequires: gcc-c++ gcc