diff --git a/docs/conf.py b/docs/conf.py
index 5b1860b7..f45b3407 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 #
 # Configuration file for the Sphinx documentation builder.
 #
diff --git a/pymc_experimental/__init__.py b/pymc_experimental/__init__.py
index 25bc449c..838149d4 100644
--- a/pymc_experimental/__init__.py
+++ b/pymc_experimental/__init__.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 __version__ = "0.0.1"
 
 import logging
diff --git a/pymc_experimental/distributions/histogram_utils.py b/pymc_experimental/distributions/histogram_utils.py
index 831d964c..1829e9f9 100644
--- a/pymc_experimental/distributions/histogram_utils.py
+++ b/pymc_experimental/distributions/histogram_utils.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 from typing import Dict
 
 import numpy as np
diff --git a/pymc_experimental/gp/__init__.py b/pymc_experimental/gp/__init__.py
index 133de4dc..c08daef8 100644
--- a/pymc_experimental/gp/__init__.py
+++ b/pymc_experimental/gp/__init__.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 from pymc_experimental.gp.latent_approx import (
     HSGP,
     KarhunenLoeveExpansion,
diff --git a/pymc_experimental/gp/latent_approx.py b/pymc_experimental/gp/latent_approx.py
index b0591085..ed179d92 100644
--- a/pymc_experimental/gp/latent_approx.py
+++ b/pymc_experimental/gp/latent_approx.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 import aesara.tensor as at
 import numpy as np
 import pymc as pm
diff --git a/pymc_experimental/inference/__init__.py b/pymc_experimental/inference/__init__.py
index 2339ccd4..c74607bf 100644
--- a/pymc_experimental/inference/__init__.py
+++ b/pymc_experimental/inference/__init__.py
@@ -1 +1,16 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 from pymc_experimental.inference.fit import fit
diff --git a/pymc_experimental/model_builder.py b/pymc_experimental/model_builder.py
index 82d2f97a..c0583c19 100644
--- a/pymc_experimental/model_builder.py
+++ b/pymc_experimental/model_builder.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 import hashlib
 from pathlib import Path
 from typing import Dict, Union
diff --git a/pymc_experimental/tests/distributions/__init__.py b/pymc_experimental/tests/distributions/__init__.py
index 41ff5483..fa2a6448 100644
--- a/pymc_experimental/tests/distributions/__init__.py
+++ b/pymc_experimental/tests/distributions/__init__.py
@@ -1,2 +1,17 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 from pymc_experimental.distributions import histogram_utils
 from pymc_experimental.distributions.histogram_utils import histogram_approximation
diff --git a/pymc_experimental/tests/test_histogram_approximation.py b/pymc_experimental/tests/test_histogram_approximation.py
index 33bda545..59521d53 100644
--- a/pymc_experimental/tests/test_histogram_approximation.py
+++ b/pymc_experimental/tests/test_histogram_approximation.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 import numpy as np
 import pymc as pm
 import pytest
diff --git a/pymc_experimental/tests/test_model_builder.py b/pymc_experimental/tests/test_model_builder.py
index 9946cf79..d1df5535 100644
--- a/pymc_experimental/tests/test_model_builder.py
+++ b/pymc_experimental/tests/test_model_builder.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 import numpy as np
 import pandas as pd
 import pymc as pm
diff --git a/pymc_experimental/tests/test_prior_from_trace.py b/pymc_experimental/tests/test_prior_from_trace.py
index 1c76343d..ee246106 100644
--- a/pymc_experimental/tests/test_prior_from_trace.py
+++ b/pymc_experimental/tests/test_prior_from_trace.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 import arviz as az
 import numpy as np
 import pymc as pm
diff --git a/pymc_experimental/tests/test_splines.py b/pymc_experimental/tests/test_splines.py
index 66a2fa35..35fbd25a 100644
--- a/pymc_experimental/tests/test_splines.py
+++ b/pymc_experimental/tests/test_splines.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 import aesara
 import aesara.tensor as at
 import numpy as np
diff --git a/pymc_experimental/utils/__init__.py b/pymc_experimental/utils/__init__.py
index f3802e06..ec35cb8d 100644
--- a/pymc_experimental/utils/__init__.py
+++ b/pymc_experimental/utils/__init__.py
@@ -1,2 +1,17 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 from pymc_experimental.utils import prior, spline
 from pymc_experimental.utils.linear_cg import linear_cg
diff --git a/pymc_experimental/utils/linear_cg.py b/pymc_experimental/utils/linear_cg.py
index 55d47d4b..43335c78 100644
--- a/pymc_experimental/utils/linear_cg.py
+++ b/pymc_experimental/utils/linear_cg.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 import numpy as np
 
 EVAL_CG_TOLERANCE = 0.01
diff --git a/pymc_experimental/utils/prior.py b/pymc_experimental/utils/prior.py
index b5a0e0de..80f9c76d 100644
--- a/pymc_experimental/utils/prior.py
+++ b/pymc_experimental/utils/prior.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 from typing import Dict, List, Optional, Sequence, Tuple, TypedDict, Union
 
 import aeppl.transforms
diff --git a/pymc_experimental/utils/spline.py b/pymc_experimental/utils/spline.py
index a1c83ea7..fa757c01 100644
--- a/pymc_experimental/utils/spline.py
+++ b/pymc_experimental/utils/spline.py
@@ -1,3 +1,18 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
 import aesara
 import aesara.sparse
 import aesara.tensor as at