--- lib/external/pattern_language/lib/CMakeLists.txt.orig	2023-02-12 13:35:48 UTC
+++ lib/external/pattern_language/lib/CMakeLists.txt
@@ -34,7 +34,7 @@ add_library(libpl ${LIBRARY_TYPE}
         source/pl/lib/std/hash.cpp
 )
 
-target_compile_options(libpl PRIVATE -Wall -Wextra -Werror -Wpedantic -Wno-unknown-pragmas)
+target_compile_options(libpl PRIVATE -Wall -Wextra -Werror -Wpedantic -Wno-unknown-pragmas -Wno-error=deprecated-declarations)
 
 target_include_directories(libpl PUBLIC include)
 target_link_libraries(libpl PRIVATE fmt::fmt-header-only)
