diff --git a/wpiutil/src/main/native/include/Eigen/src/Core/util/DisableStupidWarnings.h b/wpiutil/src/main/native/include/Eigen/src/Core/util/DisableStupidWarnings.h
index 351bd6c600..ce573a8411 100644
--- a/wpiutil/src/main/native/include/Eigen/src/Core/util/DisableStupidWarnings.h
+++ b/wpiutil/src/main/native/include/Eigen/src/Core/util/DisableStupidWarnings.h
@@ -57,6 +57,9 @@
   #if __GNUC__>=6
     #pragma GCC diagnostic ignored "-Wignored-attributes"
   #endif
+  #if __GNUC__>=9
+    #pragma GCC diagnostic ignored "-Wdeprecated-copy"
+  #endif
 
 #endif