diff --git a/WORKSPACE b/WORKSPACE
index 3a30f99..24dc796 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -127,3 +127,12 @@ http_archive(
     build_file = "@pybind11_bazel//:pybind11.BUILD",
 )
 
+# License rules.
+http_archive(
+    name = "rules_license",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_license/releases/download/0.0.7/rules_license-0.0.7.tar.gz",
+        "https://github.com/bazelbuild/rules_license/releases/download/0.0.7/rules_license-0.0.7.tar.gz",
+    ],
+    sha256 = "4531deccb913639c30e5c7512a054d5d875698daeb75d8cf90f284375fe7c360",
+)
diff --git a/neural_structured_learning/BUILD b/neural_structured_learning/BUILD
index f439c8d..eda5fd8 100644
--- a/neural_structured_learning/BUILD
+++ b/neural_structured_learning/BUILD
@@ -17,8 +17,17 @@
 
 # Placeholder for internal Python strict compatibility macro.
 # Internal annotation for sync
+load("@rules_license//rules:license.bzl", "license")
 
-package(default_visibility = ["//visibility:public"])
+package(
+    default_applicable_licenses = [":license"],
+    default_visibility = ["//visibility:public"],
+)
+
+license(
+    name = "license",
+    package_name = "neural_structured_learning",
+)
 
 licenses(["notice"])
 
diff --git a/neural_structured_learning/configs/BUILD b/neural_structured_learning/configs/BUILD
index 0a0b531..af41302 100644
--- a/neural_structured_learning/configs/BUILD
+++ b/neural_structured_learning/configs/BUILD
@@ -18,10 +18,12 @@
 # Placeholder for internal Python strict compatibility macro.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//visibility:public"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "configs",
     srcs = [
diff --git a/neural_structured_learning/estimator/BUILD b/neural_structured_learning/estimator/BUILD
index 28dd69d..e9ab945 100644
--- a/neural_structured_learning/estimator/BUILD
+++ b/neural_structured_learning/estimator/BUILD
@@ -18,10 +18,12 @@
 # Placeholder for internal Python strict & test compatibility macro.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//visibility:public"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "estimator",
     srcs = ["__init__.py"],
diff --git a/neural_structured_learning/examples/BUILD b/neural_structured_learning/examples/BUILD
index 583c762..2c55290 100644
--- a/neural_structured_learning/examples/BUILD
+++ b/neural_structured_learning/examples/BUILD
@@ -1,7 +1,10 @@
 package(
-    licenses = ["notice"],  # Apache 2.0
+    default_applicable_licenses = ["//neural_structured_learning:license"],
+    default_visibility = ["//visibility:public"],
 )
 
+licenses(["notice"])
+
 py_binary(
     name = "graph_keras_mlp_cora",
     srcs = ["graph_keras_mlp_cora.py"],
diff --git a/neural_structured_learning/experimental/BUILD b/neural_structured_learning/experimental/BUILD
index a1151fb..09f6c73 100644
--- a/neural_structured_learning/experimental/BUILD
+++ b/neural_structured_learning/experimental/BUILD
@@ -2,10 +2,12 @@
 # Placeholder for internal Python strict compatibility macro.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//neural_structured_learning:__subpackages__"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "experimental",
     srcs = ["__init__.py"],
diff --git a/neural_structured_learning/keras/BUILD b/neural_structured_learning/keras/BUILD
index fbee86d..a6fd0d3 100644
--- a/neural_structured_learning/keras/BUILD
+++ b/neural_structured_learning/keras/BUILD
@@ -18,10 +18,12 @@
 # Build rules for Keras APIs in Neural Structured Learning.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//visibility:public"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "keras",
     srcs = ["__init__.py"],
diff --git a/neural_structured_learning/keras/layers/BUILD b/neural_structured_learning/keras/layers/BUILD
index 55cb6d2..d92306b 100644
--- a/neural_structured_learning/keras/layers/BUILD
+++ b/neural_structured_learning/keras/layers/BUILD
@@ -18,9 +18,12 @@
 # Build rules for custom Keras layers in Neural Structured Learning.
 
 package(
-    licenses = ["notice"],  # Apache 2.0
+    default_applicable_licenses = ["//neural_structured_learning:license"],
+    default_visibility = ["//visibility:public"],
 )
 
+licenses(["notice"])
+
 py_library(
     name = "layers",
     srcs = ["__init__.py"],
diff --git a/neural_structured_learning/lib/BUILD b/neural_structured_learning/lib/BUILD
index 927b457..aa179b7 100644
--- a/neural_structured_learning/lib/BUILD
+++ b/neural_structured_learning/lib/BUILD
@@ -18,10 +18,12 @@
 # Build rules for libraries and ops in Neural Structured Learning.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//visibility:public"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "lib",
     srcs = ["__init__.py"],
diff --git a/neural_structured_learning/tools/BUILD b/neural_structured_learning/tools/BUILD
index 1aeba3f..b00b7aa 100644
--- a/neural_structured_learning/tools/BUILD
+++ b/neural_structured_learning/tools/BUILD
@@ -18,10 +18,12 @@
 # Build rules for tools in Neural Structured Learning.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//visibility:public"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "tools",
     srcs = ["__init__.py"],
diff --git a/research/carls/util/BUILD b/research/carls/util/BUILD
index 7e2396d..bd4cebe 100644
--- a/research/carls/util/BUILD
+++ b/research/carls/util/BUILD
@@ -18,10 +18,12 @@
 # Placeholder for internal Python strict & test compatibility macro.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//research/carls:internal"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "array_ops",
     srcs = ["array_ops.py"],
diff --git a/research/meo/linear_finetuning/BUILD b/research/meo/linear_finetuning/BUILD
index f1af79e..d4b342b 100644
--- a/research/meo/linear_finetuning/BUILD
+++ b/research/meo/linear_finetuning/BUILD
@@ -15,10 +15,12 @@
 load("//devtools/python/blaze:pytype.bzl", "pytype_strict_binary", "pytype_strict_library")
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//research/meo:__subpackages__"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 pytype_strict_library(
     name = "linear_finetuning_lib",
     srcs = [
diff --git a/research/meo/mlp_baseline/BUILD b/research/meo/mlp_baseline/BUILD
index 4caeec8..17194c8 100644
--- a/research/meo/mlp_baseline/BUILD
+++ b/research/meo/mlp_baseline/BUILD
@@ -15,10 +15,12 @@
 load("//devtools/python/blaze:pytype.bzl", "pytype_strict_binary", "pytype_strict_library")
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//research/meo:__subpackages__"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 pytype_strict_library(
     name = "mlp_baseline_lib",
     srcs = [
diff --git a/research/meo/parameter_generator_generation/BUILD b/research/meo/parameter_generator_generation/BUILD
index 4bc8176..e281b87 100644
--- a/research/meo/parameter_generator_generation/BUILD
+++ b/research/meo/parameter_generator_generation/BUILD
@@ -15,10 +15,12 @@
 load("//devtools/python/blaze:pytype.bzl", "pytype_strict_binary", "pytype_strict_library")
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//research/meo:__subpackages__"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 pytype_strict_library(
     name = "parameter_generator_lib",
     srcs = [
diff --git a/research/neural_clustering/BUILD b/research/neural_clustering/BUILD
index 8ed64d1..f290fec 100644
--- a/research/neural_clustering/BUILD
+++ b/research/neural_clustering/BUILD
@@ -18,10 +18,12 @@
 # Build rules for Neural Clustering.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//visibility:public"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "neural_clustering",
     srcs = ["__init__.py"],
diff --git a/research/neural_clustering/data_generators/BUILD b/research/neural_clustering/data_generators/BUILD
index 52c99f3..69f8ccb 100644
--- a/research/neural_clustering/data_generators/BUILD
+++ b/research/neural_clustering/data_generators/BUILD
@@ -18,10 +18,12 @@
 # Build rules for data modules in Neural Clustering.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//visibility:public"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "data_generators",
     srcs = ["__init__.py"],
diff --git a/research/neural_clustering/models/BUILD b/research/neural_clustering/models/BUILD
index b86ed0f..a98b1fa 100644
--- a/research/neural_clustering/models/BUILD
+++ b/research/neural_clustering/models/BUILD
@@ -18,10 +18,12 @@
 # Build rules for models in Neural Clustering.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//visibility:public"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "models",
     srcs = ["__init__.py"],
diff --git a/research/neural_clustering/utils/BUILD b/research/neural_clustering/utils/BUILD
index 98b13c1..203998d 100644
--- a/research/neural_clustering/utils/BUILD
+++ b/research/neural_clustering/utils/BUILD
@@ -18,10 +18,12 @@
 # Build rules for utils in Neural Clustering.
 
 package(
+    default_applicable_licenses = ["//neural_structured_learning:license"],
     default_visibility = ["//visibility:public"],
-    licenses = ["notice"],  # Apache 2.0
 )
 
+licenses(["notice"])
+
 py_library(
     name = "utils",
     srcs = ["__init__.py"],