diff --git a/pyproject.toml b/pyproject.toml
index 7a7d8ca86..219cd6421 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,7 +51,7 @@ dev = [
     "numpydoc",
 
     # For schema generation.
-    "pydantic<2.0",
+    "pydantic<3.0",
 ]
 
 [project.scripts]