diff --git a/libArcus-3.3.0-PyQt5.sip.patch b/libArcus-3.3.0-PyQt5.sip.patch
new file mode 100644
index 0000000..ec9fd5d
--- /dev/null
+++ b/libArcus-3.3.0-PyQt5.sip.patch
@@ -0,0 +1,12 @@
+diff -up libArcus-3.3.0/CMakeLists.txt.sip libArcus-3.3.0/CMakeLists.txt
+--- libArcus-3.3.0/CMakeLists.txt.sip	2017-10-28 17:28:39.000000000 -0500
++++ libArcus-3.3.0/CMakeLists.txt	2018-08-23 09:19:22.608553543 -0500
+@@ -88,7 +88,7 @@ endif()
+ if(BUILD_PYTHON)
+     set(SIP_EXTRA_FILES_DEPEND python/SocketListener.sip python/Types.sip python/PythonMessage.sip python/Error.sip)
+     set(SIP_EXTRA_SOURCE_FILES python/PythonMessage.cpp)
+-    set(SIP_EXTRA_OPTIONS -g) # -g means always release the GIL before calling C++ methods.
++    set(SIP_EXTRA_OPTIONS -g -n PyQt5.sip) # -g means always release the GIL before calling C++ methods.
+     add_sip_python_module(Arcus python/Socket.sip Arcus)
+ endif()
+ 
diff --git a/libarcus.spec b/libarcus.spec
index cf1b17d..1f1219c 100644
--- a/libarcus.spec
+++ b/libarcus.spec
@@ -1,11 +1,15 @@
 Name:           libarcus
 Version:        3.3.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Communication library between internal components for Ultimaker software
 License:        LGPLv3+
 URL:            https://github.com/Ultimaker/libArcus
 Source0:        %{url}/archive/%{version}.tar.gz#/%{name}-%{version}.tar.gz
 
+# https://bugzilla.redhat.com/show_bug.cgi?id=1601917
+Patch1:         libArcus-3.3.0-PyQt5.sip.patch
+
+
 BuildRequires:  protobuf-devel
 BuildRequires:  python3-devel
 BuildRequires:  python3-protobuf
@@ -77,6 +81,9 @@ make install DESTDIR=%{buildroot}
 %{python3_sitearch}/Arcus.so
 
 %changelog
+* Thu Aug 23 2018 Rex Dieter <rdieter@fedoraproject.org> - 3.3.0-4
+- Use PyQt5.sip (#1601917)
+
 * Fri Jul 13 2018 Fedora Release Engineering <releng@fedoraproject.org> - 3.3.0-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild