Error message when updating a gem

#1

I am trying to update a gem an I get this message.
Thanks for your help !

The dependency wdm (~> 0.1.0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mswin32, x86-mingw32. To add those platforms to the bundle, run bundle lock --add-platform x86-mswin32 x86-mingw32.
The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mswin32, x86-mingw32, java. To add those platforms to the bundle, run bundle lock --add-platform x86-mswin32 x86-mingw32 java.