diff --git a/.mise.toml b/.mise.toml
new file mode 100644
index 0000000..3156a04
--- /dev/null
+++ b/.mise.toml
@@ -0,0 +1,2 @@
+[tools]
+rust = "stable"
diff --git a/.tool-versions b/.tool-versions
deleted file mode 100644
index 3cd07d4..0000000
--- a/.tool-versions
+++ /dev/null
@@ -1 +0,0 @@
-rust stable
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7611443..8834ab3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,5 @@
 <!--
-SPDX-License-Identifier: CC-BY-SA-4.0
+SPDX-License-Identifier: MPL-2.0
 SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell (hyperpolymath)
 -->
 
diff --git a/docs/tech-debt-2026-05-26.md b/docs/tech-debt-2026-05-26.md
index 9cb6597..39a0158 100644
--- a/docs/tech-debt-2026-05-26.md
+++ b/docs/tech-debt-2026-05-26.md
@@ -1,5 +1,5 @@
 <!--
-SPDX-License-Identifier: CC-BY-SA-4.0
+SPDX-License-Identifier: MPL-2.0
 SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell (hyperpolymath)
 -->