diff --git a/pyproject.toml b/pyproject.toml
index 9f945b38..a19fe79e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ optional-dependencies.dev = [
     "pylint==3.3.6",
     "pylint-per-file-ignores==1.4.0",
     "pyproject-fmt==2.5.1",
-    "pyright==1.1.398",
+    "pyright==1.1.399",
     "pyroma==4.2",
     "pytest==8.3.5",
     "pytest-cov==6.1.1",
diff --git a/src/mock_vws/database.py b/src/mock_vws/database.py
index a06422f8..1d3b6265 100644
--- a/src/mock_vws/database.py
+++ b/src/mock_vws/database.py
@@ -67,7 +67,7 @@ class VuforiaDatabase:
     # ``frozen=True`` while still being able to keep the interface we want.
     # In particular, we might want to inspect the ``database`` object's targets
     # as they change via API requests.
-    targets: set[Target] = field(default_factory=set, hash=False)
+    targets: set[Target] = field(default_factory=set[Target], hash=False)
     state: States = States.WORKING
 
     request_quota: int = 100000