diff --git a/.bazelrc b/.bazelrc
index f2d0613..bdb2bfc 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -10,3 +10,6 @@ build --strip=never
 build --strict_system_includes
 build --fission=dbg
 build --features=per_object_debug_info
+
+# Enable header processing, required for layering checks with parse_header.
+build --process_headers_in_dependencies
diff --git a/BUILD.bazel b/BUILD.bazel
index 857793b..5903898 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -5,7 +5,10 @@ load("@rules_license//rules:license.bzl", "license")
 package(
     default_applicable_licenses = [":license"],
     default_visibility = ["__subpackages__"],
-    features = ["layering_check"],
+    features = [
+        "layering_check",
+        "parse_headers",
+    ],
 )
 
 license(
@@ -83,6 +86,9 @@ cc_library(
     ],
     includes = ["include"],
     visibility = ["//visibility:public"],
+    deps = [
+        ":Environment",
+    ],
 )
 
 cc_library(
diff --git a/cli/BUILD.bazel b/cli/BUILD.bazel
index 2850623..9b3bcc8 100644
--- a/cli/BUILD.bazel
+++ b/cli/BUILD.bazel
@@ -1,6 +1,10 @@
 package(
     default_applicable_licenses = ["//:license"],
     default_visibility = ["__subpackages__"],
+    features = [
+        "layering_check",
+        "parse_headers",
+    ],
 )
 
 cc_library(
@@ -8,6 +12,10 @@ cc_library(
     hdrs = glob([
         "include/vendored-cli/gz/utils/cli/*.hpp",
     ]),
+    features = [
+        # Disable header parsing for CLI11.
+        "-parse_headers",
+    ],
     includes = ["include/vendored-cli"],
 )
 
@@ -19,6 +27,7 @@ cc_library(
     includes = ["include"],
     visibility = ["//visibility:public"],
     deps = [
+        ":cli11",
         "//:Export",
     ],
 )
diff --git a/log/BUILD.bazel b/log/BUILD.bazel
index 1f2948c..5a878d0 100644
--- a/log/BUILD.bazel
+++ b/log/BUILD.bazel
@@ -3,6 +3,10 @@ load("@rules_gazebo//gazebo:headers.bzl", "gz_export_header")
 package(
     default_applicable_licenses = ["//:license"],
     default_visibility = ["__subpackages__"],
+    features = [
+        "layering_check",
+        "parse_headers",
+    ],
 )
 
 gz_export_header(