diff --git a/pyproject.toml b/pyproject.toml
index b24890f..2dcd467 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ dev = [
     "pytest",
     "pytest-cov",
     "ruff>=0.15.12",
-    "tifffile==2026.2.15",
+    "tifffile==2026.5.2",
 ]
 
 [tool.coverage]