diff --git a/pyproject.toml b/pyproject.toml
index e2319e8..788e609 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,13 +39,13 @@ dependencies = [
 ]
 
 optional-dependencies = { docs = [
-    "dask-image==2025.11.0",
-    "matplotlib==3.10.8",
-    "pydata-sphinx-theme==0.17.0",
-    "sphinx==9.0.4",
+    "dask-image==2026.5.0",
+    "matplotlib==3.11.0",
+    "pydata-sphinx-theme==0.19.0",
+    "sphinx==9.1.0",
     "sphinx-autoapi==3.8.0",
-    "sphinx-gallery==0.20.0",
-    "tifffile==2026.4.11",
+    "sphinx-gallery==0.21.0",
+    "tifffile==2026.6.1",
 ] }
 
 [project.urls]
@@ -77,5 +77,5 @@ overrides."tool.coverage.paths.source".inline_arrays = false
 dev = [
     "prek>=0.3.9",
     "pytest-cov==7.1.0",
-    "pytest==9.0.3",
+    "pytest==9.1.0",
 ]