diff --git a/net-im/psi/files/patch-src_tabs_CMakeLists.txt b/net-im/psi/files/patch-src_tabs_CMakeLists.txt
new file mode 100644
index 000000000000..7065720f7dfe
--- /dev/null
+++ b/net-im/psi/files/patch-src_tabs_CMakeLists.txt
@@ -0,0 +1,10 @@
+Fix a race condition with ninja >= 1.12.0 where included headers have not
+yet been generated by uic.
+
+--- src/tabs/CMakeLists.txt.orig	2020-09-06 07:44:34 UTC
++++ src/tabs/CMakeLists.txt
+@@ -22,3 +22,4 @@ target_include_directories(tabs PUBLIC ${CMAKE_CURRENT
+ add_library(tabs STATIC  ${HEADERS} ${MOC_SOURCES} ${PLAIN_SOURCES})
+ target_link_libraries(tabs ${QT_LIBRARIES} ${iris_LIB} tools widgets)
+ target_include_directories(tabs PUBLIC ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})
++add_dependencies(tabs build_ui_files)