diff --git a/Rakefile b/Rakefile
index c0323cb78..4b96d3036 100644
--- a/Rakefile
+++ b/Rakefile
@@ -167,7 +167,7 @@ def setup_globals
   cxxflags                += " -Wno-extra-semi"                                                          if is_clang? || check_compiler_version("gcc", "8.0.0")
   cxxflags                += " -Wmisleading-indentation -Wduplicated-cond"                               if check_compiler_version("gcc", "6.0.0")
   cxxflags                += " -Wshadow-compatible-local -Wduplicated-branches"                          if check_compiler_version("gcc", "7.0.0")
-  cxxflags                += " -Wno-deprecated-copy"                                                     if check_compiler_version("gcc", "9.0.0")
+  cxxflags                += " -Wno-deprecated-copy -Wno-stringop-overflow"                              if check_compiler_version("gcc", "9.0.0")
   cxxflags                += " #{c(:QT_CFLAGS)} #{c(:BOOST_CPPFLAGS)} #{c(:USER_CXXFLAGS)}"
 
   ldflags                  = ""