diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 4665da0..e4dafc6 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -40,7 +40,7 @@ To make review of PRs easier, please:
  * Keep PRs small and cohesive - if you have multiple independent contributions, please submit them as independent PRs.
  * Minimise "spurious" changes (e.g. whitespace shenanigans).
  * Ensure all updated files include your copyright information at the top.
- * Ensure all new files include a header comment block containing the [Apache 2.0 license header and your copyright information](https://infra.apache.org/apply-license.html).
+ * Ensure all new files include a header comment block containing the [MPL 2.0 license header and your copyright information](https://www.mozilla.org/en-US/MPL/headers/).
 
 
 ## Commit and PR Messages
diff --git a/.gitignore b/.gitignore
index 6663fa3..d71c171 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,4 +19,3 @@ attic
 resources/logback-test.xml
 .clj-kondo/.cache
 .lein-failures
-greplace-test-*.txt
diff --git a/deps.edn b/deps.edn
index 9f63af4..17631a8 100644
--- a/deps.edn
+++ b/deps.edn
@@ -1,19 +1,11 @@
 ;
 ; Copyright © 2021 Peter Monks
 ;
-; 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
+; This Source Code Form is subject to the terms of the Mozilla Public
+; License, v. 2.0. If a copy of the MPL was not distributed with this
+; file, You can obtain one at https://mozilla.org/MPL/2.0/.
 ;
-;     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.
-;
-; SPDX-License-Identifier: Apache-2.0
+; SPDX-License-Identifier: MPL-2.0
 ;
 
 {:deps
diff --git a/pbr.clj b/pbr.clj
index f144d0c..9e9d89a 100644
--- a/pbr.clj
+++ b/pbr.clj
@@ -1,19 +1,11 @@
 ;
 ; Copyright © 2021 Peter Monks
 ;
-; 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
+; This Source Code Form is subject to the terms of the Mozilla Public
+; License, v. 2.0. If a copy of the MPL was not distributed with this
+; file, You can obtain one at https://mozilla.org/MPL/2.0/.
 ;
-;     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.
-;
-; SPDX-License-Identifier: Apache-2.0
+; SPDX-License-Identifier: MPL-2.0
 ;
 
 #_{:clj-kondo/ignore [:unresolved-namespace]}
@@ -27,7 +19,7 @@
          :validate-pom true
          :pom          {:description      "This library implements \"URL unfurling\" approximately according to how Slack does it."
                         :url              "https://github.com/pmonks/unfurl"
-                        :licenses         [:license   {:name "Apache-2.0" :url "http://www.apache.org/licenses/LICENSE-2.0.html"}]
+                        :licenses         [:license   {:name "MPL-2.0" :url "https://www.mozilla.org/en-US/MPL/2.0/"}]
                         :developers       [:developer {:id "pmonks" :name "Peter Monks" :email "pmonks+unfurl@gmail.com"}]
                         :scm              {:url "https://github.com/pmonks/unfurl" :connection "scm:git:git://github.com/pmonks/unfurl.git" :developer-connection "scm:git:ssh://git@github.com/pmonks/unfurl.git"}
                         :issue-management {:system "github" :url "https://github.com/pmonks/unfurl/issues"}}
diff --git a/test/unfurl/api_test.clj b/test/unfurl/api_test.clj
index 22b723c..1c44c65 100644
--- a/test/unfurl/api_test.clj
+++ b/test/unfurl/api_test.clj
@@ -1,19 +1,11 @@
 ;
 ; Copyright © 2016 Peter Monks
 ;
-; 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
+; This Source Code Form is subject to the terms of the Mozilla Public
+; License, v. 2.0. If a copy of the MPL was not distributed with this
+; file, You can obtain one at https://mozilla.org/MPL/2.0/.
 ;
-;     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.
-;
-; SPDX-License-Identifier: Apache-2.0
+; SPDX-License-Identifier: MPL-2.0
 ;
 
 (ns unfurl.api-test