diff --git a/UNLICENSE b/UNLICENSE
new file mode 100644
index 0000000..cde4ac6
--- /dev/null
+++ b/UNLICENSE
@@ -0,0 +1,10 @@
+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 <http://unlicense.org/>
diff --git a/src/syndicate/bags.nim b/src/syndicate/bags.nim
index f280a19..b7545f1 100644
--- a/src/syndicate/bags.nim
+++ b/src/syndicate/bags.nim
@@ -1,4 +1,5 @@
-# SPDX-License-Identifier: ISC
+# SPDX-FileCopyrightText: 2021 ☭ Emery Hemingway
+# SPDX-License-Identifier: Unlicense
 
 ## An unordered association of items to counts.
 ## An item count may be negative, unlike CountTable.
diff --git a/src/syndicate/dataflow.nim b/src/syndicate/dataflow.nim
index c412fdd..2cc8ec5 100644
--- a/src/syndicate/dataflow.nim
+++ b/src/syndicate/dataflow.nim
@@ -1,4 +1,5 @@
-# SPDX-License-Identifier: ISC
+# SPDX-FileCopyrightText: 2021 ☭ Emery Hemingway
+# SPDX-License-Identifier: Unlicense
 
 import preserves
 import options, sets, tables
diff --git a/src/syndicate/drivers/timers.nim b/src/syndicate/drivers/timers.nim
index 2f3db9d..9042e60 100644
--- a/src/syndicate/drivers/timers.nim
+++ b/src/syndicate/drivers/timers.nim
@@ -1,4 +1,5 @@
-# SPDX-License-Identifier: ISC
+# SPDX-FileCopyrightText: 2021 ☭ Emery Hemingway
+# SPDX-License-Identifier: Unlicense
 
 import std/[asyncdispatch, monotimes, times]
 import preserves, preserves/records
diff --git a/src/syndicate/events.nim b/src/syndicate/events.nim
index 3beec87..e4fa540 100644
--- a/src/syndicate/events.nim
+++ b/src/syndicate/events.nim
@@ -1,3 +1,4 @@
-# SPDX-License-Identifier: ISC
+# SPDX-FileCopyrightText: 2021 ☭ Emery Hemingway
+# SPDX-License-Identifier: Unlicense
 
 type EventKind* = enum addedEvent, removedEvent, messageEvent
diff --git a/syndicate.nimble b/syndicate.nimble
index 2a44e86..6e50dd8 100644
--- a/syndicate.nimble
+++ b/syndicate.nimble
@@ -3,7 +3,7 @@
 version       = "0.0.0"
 author        = "Emery Hemingway"
 description   = "Syndicated actors for conversational concurrency"
-license       = "ISC"
+license       = "Unlicense"
 srcDir        = "src"
 
 
diff --git a/tests/test_box_and_client.nim b/tests/test_box_and_client.nim
index c76b853..2f995e4 100644
--- a/tests/test_box_and_client.nim
+++ b/tests/test_box_and_client.nim
@@ -1,4 +1,5 @@
-# SPDX-License-Identifier: ISC
+# SPDX-FileCopyrightText: 2021 ☭ Emery Hemingway
+# SPDX-License-Identifier: Unlicense
 
 import syndicate/assertions, syndicate/dataspaces, syndicate/events, syndicate/skeletons
 import preserves, preserves/records
diff --git a/tests/test_timer.nim b/tests/test_timer.nim
index d2f9489..9148660 100644
--- a/tests/test_timer.nim
+++ b/tests/test_timer.nim
@@ -1,4 +1,5 @@
-# SPDX-License-Identifier: ISC
+# SPDX-FileCopyrightText: 2021 ☭ Emery Hemingway
+# SPDX-License-Identifier: Unlicense
 
 import std/[asyncdispatch, monotimes, times]
 import preserves, preserves/records