error messages about lambda expressions

[jejones3141]

I'm using version 1.9.4 of linter-javac, and atom 1.21.0. linter-javac gives an error message pointing out that lambda expressions are only usable in 1.8 and above, but I'm using such a version (actually the currently-new 1.9). How can I suppress such error messages? I tried adding "-source 1.8" to the linter-javac "additional javac options", to no effect.