diff --git a/LICENSE.md b/LICENSE.md
index f8b1e2a..85862f5 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,6 +1,9 @@
 MIT License
 
-Copyright (c) 2021 Beacon Biosignals
+Copyright (c) 2016-2023 The Julia Team
+Copyright (c) 2018-2023 Mauro Werder
+Copyright (c) 2023 Max Horn
+Copyright (c) 2024 Beacon Biosignals
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -19,14 +22,3 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
-
-The source implementation was originally copied from that found in `AbstractAlgebra.jl`
-located here: https://github.com/Nemocas/AbstractAlgebra.jl, and is available under the following 2-clause BSD license:
-
-> Copyright (c) 2014-2016: William Hart, Tommy Hofmann, Claus Fieker, Fredrik Johansson.
-
-> Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
-> Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
-> Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
-> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
index ddf8966..ff7d575 100644
--- a/README.md
+++ b/README.md
@@ -22,3 +22,10 @@ GC.gc(true)
 ```
 
 Avoid assuming a key exists in a `WeakKeyIdDict`, especially when allocation occurs. Keys can be removed any time garbage collection occurs. Favor the methods `get!` and `get` over `getindex`.
+
+
+## Credits
+
+Much of the credit for the implementation of WeakKeyIdDict goes to Mauro Werder (@mauro3) for the initial [work in the julia repository](https://github.com/JuliaLang/julia/pull/28182), and [DataStructures](https://github.com/JuliaCollections/DataStructures.jl/pull/402). Max Horn (@fingolfin) then updated and debugged a version merged to [AbstractAlgebra](https://github.com/Nemocas/AbstractAlgebra.jl/pull/1419).
+
+The version here adds a few additional tests for edge-cases, fixing related bugs along the way, using code from some of the `IdDict` tests from Base [julia](https://github.com/JuliaLang/julia).