diff --git a/.bazelrc b/.bazelrc
index 194ee8ebe4..0e94238eff 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -21,13 +21,11 @@ test:windows --experimental_enable_runfiles
 # WIP: bazel 0.27 fixs
 build\
       --incompatible_disable_deprecated_attr_params=false\
-      --incompatible_new_actions_api=false\
       --incompatible_no_support_tools_in_action_inputs=false\
       --incompatible_require_ctx_in_configure_features=false\
       --incompatible_depset_union=false
 test\
       --incompatible_disable_deprecated_attr_params=false\
-      --incompatible_new_actions_api=false\
       --incompatible_no_support_tools_in_action_inputs=false\
       --incompatible_require_ctx_in_configure_features=false\
       --incompatible_depset_union=false
diff --git a/WORKSPACE b/WORKSPACE
index 71852a4719..19d928150d 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -98,11 +98,15 @@ nixpkgs_package(
 
 http_archive(
     name = "com_google_protobuf",
-    sha256 = "73fdad358857e120fd0fa19e071a96e15c0f23bb25f85d3f7009abfd4f264a2a",
-    strip_prefix = "protobuf-3.6.1.3",
-    urls = ["https://github.com/google/protobuf/archive/v3.6.1.3.tar.gz"],
+    sha256 = "03d2e5ef101aee4c2f6ddcf145d2a04926b9c19e7086944df3842b1b8502b783",
+    strip_prefix = "protobuf-3.8.0",
+    urls = ["https://github.com/google/protobuf/archive/v3.8.0.tar.gz"],
 )
 
+load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
+
+protobuf_deps()  # configure and install zlib for protobuf
+
 nixpkgs_local_repository(
     name = "nixpkgs",
     nix_file = "//nixpkgs:default.nix",
diff --git a/hazel/third_party/cabal2bazel/bzl/cabal_paths.bzl b/hazel/third_party/cabal2bazel/bzl/cabal_paths.bzl
index b49e0fea33..fc8312f57a 100644
--- a/hazel/third_party/cabal2bazel/bzl/cabal_paths.bzl
+++ b/hazel/third_party/cabal2bazel/bzl/cabal_paths.bzl
@@ -28,14 +28,14 @@ load("@io_tweag_rules_haskell//haskell:haskell.bzl", "haskell_library")
 load("//tools:mangling.bzl", "hazel_library")
 
 def _impl_path_module_gen(ctx):
-    paths_file = ctx.new_file(ctx.label.name)
+    paths_file = ctx.actions.declare_file(ctx.label.name)
 
     base_dir = paths.join(
         ctx.label.package,
         ctx.attr.data_dir if ctx.attr.data_dir else "",
     )
 
-    ctx.template_action(
+    ctx.actions.expand_template(
         template = ctx.file._template,
         output = paths_file,
         substitutions = {