diff --git a/pyproject.toml b/pyproject.toml
index a7dbba09..1d8276c1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ dependencies = [
   "numpy ~= 1.20",
   "scipy ~=1.14",
   "piexif",
+  "pydantic ~= 2.10.6",
 ]
 
 [project.optional-dependencies]