diff --git a/Cargo.toml b/Cargo.toml
index 463bacc..8f1573b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,9 @@ members = [
 ]
 resolver = "2"
 
+[workspace.package]
+license = "Unlicense"
+
 [workspace.dependencies]
 backon = "1.5"
 chrono = "0.4.40"
diff --git a/UNLICENSE b/UNLICENSE
new file mode 100644
index 0000000..efb9808
--- /dev/null
+++ b/UNLICENSE
@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS 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.
+
+For more information, please refer to <https://unlicense.org/>
diff --git a/arbitrary-value/Cargo.toml b/arbitrary-value/Cargo.toml
index c0cba91..e967645 100644
--- a/arbitrary-value/Cargo.toml
+++ b/arbitrary-value/Cargo.toml
@@ -2,6 +2,7 @@
 name = "arbitrary-value"
 version = "0.1.0"
 edition = "2021"
+license = { workspace = true }
 
 [features]
 pyo3 = ["dep:pyo3"]
diff --git a/driver/kasa/Cargo.toml b/driver/kasa/Cargo.toml
index a1fb6b5..51a1c80 100644
--- a/driver/kasa/Cargo.toml
+++ b/driver/kasa/Cargo.toml
@@ -2,6 +2,7 @@
 name = "driver-kasa"
 version = "0.1.0"
 edition = "2021"
+license = { workspace = true }
 
 [dependencies]
 backon = { workspace = true }
diff --git a/emitter-and-signal/Cargo.toml b/emitter-and-signal/Cargo.toml
index 70ca82f..4191921 100644
--- a/emitter-and-signal/Cargo.toml
+++ b/emitter-and-signal/Cargo.toml
@@ -2,6 +2,7 @@
 name = "emitter-and-signal"
 version = "0.1.0"
 edition = "2021"
+license = { workspace = true }
 
 [dependencies]
 deranged = { workspace = true }
diff --git a/entrypoint/Cargo.toml b/entrypoint/Cargo.toml
index 355a5fa..d70e1b7 100644
--- a/entrypoint/Cargo.toml
+++ b/entrypoint/Cargo.toml
@@ -2,6 +2,7 @@
 name = "smart-home-in-rust-with-home-assistant"
 version = "0.2.0"
 edition = "2021"
+license = { workspace = true }
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [lib]
diff --git a/home-assistant/Cargo.toml b/home-assistant/Cargo.toml
index 7ef70fa..a6cfff7 100644
--- a/home-assistant/Cargo.toml
+++ b/home-assistant/Cargo.toml
@@ -2,6 +2,7 @@
 name = "home-assistant"
 version = "0.1.0"
 edition = "2021"
+license = { workspace = true }
 
 [features]
 tracing = ["dep:tracing"]
diff --git a/protocol/Cargo.toml b/protocol/Cargo.toml
index 1304277..bef3409 100644
--- a/protocol/Cargo.toml
+++ b/protocol/Cargo.toml
@@ -2,6 +2,7 @@
 name = "protocol"
 version = "0.1.0"
 edition = "2021"
+license = { workspace = true }
 
 [dependencies]
 deranged = { workspace = true }
diff --git a/python-utils/Cargo.toml b/python-utils/Cargo.toml
index 0fdf474..e8a5b3a 100644
--- a/python-utils/Cargo.toml
+++ b/python-utils/Cargo.toml
@@ -2,6 +2,7 @@
 name = "python-utils"
 version = "0.1.0"
 edition = "2021"
+license = { workspace = true }
 
 [dependencies]
 pyo3 = { workspace = true }