diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9daa2ed..7ff106e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## Unreleased
+
+* Remove mypy as a runtime dependency
+
 ## 1.19.0 - 2026-01-30
 
 ### Features
diff --git a/pyproject.toml b/pyproject.toml
index 939b997..77f2e0f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,11 @@ requires = [
 ]
 build-backend = "setuptools.build_meta"
 
+[dependency-groups]
+dev = [
+    "mypy>=1.17.1",
+]
+
 [tool.setuptools_scm]
 
 [project.scripts]