diff --git a/.bazelrc b/.bazelrc
index 9d3a556c..d56cdd17 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -8,3 +8,4 @@ test --build_tests_only
 test --test_output=errors
 build --cxxopt=-std=c++14
 build --host_cxxopt=-std=c++14
+build --java_language_version=11
diff --git a/shell.nix b/shell.nix
index 6be64bdf..10dd95c1 100644
--- a/shell.nix
+++ b/shell.nix
@@ -65,6 +65,7 @@ in (pkgs.buildFHSUserEnv {
     vim
     openssh
     libxcrypt
+    zlib
   ];
   multiPkgs = pkgs: [
     (pkgs.runCommand "protocols" {}