diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 909196c8c0..4dbe115525 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -21,12 +21,12 @@ jobs:
     strategy:
       matrix:
         python-version: ['3.11', '3.12', '3.13']
-        numpy-version: ['1.25', '2.2']
+        numpy-version: ['1.26', '2.2']
         dependency-set: ["minimal", "optional"]
         os: ["ubuntu-latest"]
         include:
           - python-version: '3.11'
-            numpy-version: '1.25'
+            numpy-version: '1.26'
             dependency-set: 'optional'
             os: 'macos-latest'
           - python-version: '3.13'
@@ -34,7 +34,7 @@ jobs:
             dependency-set: 'optional'
             os: 'macos-latest'
           - python-version: '3.11'
-            numpy-version: '1.25'
+            numpy-version: '1.26'
             dependency-set: 'optional'
             os: 'windows-latest'
           - python-version: '3.13'
diff --git a/changes/xxxx.feature.rst b/changes/xxxx.feature.rst
new file mode 100644
index 0000000000..1219900cb7
--- /dev/null
+++ b/changes/xxxx.feature.rst
@@ -0,0 +1 @@
+The minimum version of NumPy has increased to 1.26.
diff --git a/docs/user-guide/installation.rst b/docs/user-guide/installation.rst
index a79f0763cb..fbd30dedea 100644
--- a/docs/user-guide/installation.rst
+++ b/docs/user-guide/installation.rst
@@ -8,7 +8,7 @@ Required dependencies include:
 
 - `Python <https://docs.python.org/3/>`_ (3.11 or later)
 - `packaging <https://packaging.pypa.io>`_ (22.0 or later)
-- `numpy <https://numpy.org>`_ (1.25 or later)
+- `numpy <https://numpy.org>`_ (1.26 or later)
 - `numcodecs[crc32c] <https://numcodecs.readthedocs.io>`_ (0.14 or later)
 - `typing_extensions <https://typing-extensions.readthedocs.io>`_ (4.9 or later)
 - `donfig <https://donfig.readthedocs.io>`_ (0.8 or later)
diff --git a/pyproject.toml b/pyproject.toml
index a48a5eea25..85517d8d0a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ requires-python = ">=3.11"
 # If you add a new dependency here, please also add it to .pre-commit-config.yml
 dependencies = [
     'packaging>=22.0',
-    'numpy>=1.25',
+    'numpy>=1.26',
     'numcodecs[crc32c]>=0.14',
     'typing_extensions>=4.9',
     'donfig>=0.8',
@@ -154,7 +154,7 @@ features = ["test"]
 
 [[tool.hatch.envs.test.matrix]]
 python = ["3.11", "3.12", "3.13"]
-numpy = ["1.25", "2.2"]
+numpy = ["1.26", "2.2"]
 deps = ["minimal", "optional"]
 
 [tool.hatch.envs.test.overrides]
@@ -190,7 +190,7 @@ features = ["test", "gpu"]
 
 [[tool.hatch.envs.gputest.matrix]]
 python = ["3.11", "3.12", "3.13"]
-numpy = ["1.25", "2.2"]
+numpy = ["1.26", "2.2"]
 version = ["minimal"]
 
 [tool.hatch.envs.gputest.scripts]
@@ -246,7 +246,7 @@ python = "3.11"
 dependencies = [
     'zarr[remote]',
     'packaging==22.*',
-    'numpy==1.25.*',
+    'numpy==1.26.*',
     'numcodecs==0.14.*',  # 0.14 needed for zarr3 codecs
     'fsspec==2023.10.0',
     's3fs==2023.10.0',
diff --git a/src/zarr/testing/strategies.py b/src/zarr/testing/strategies.py
index 5e070b5387..2acf7b944c 100644
--- a/src/zarr/testing/strategies.py
+++ b/src/zarr/testing/strategies.py
@@ -405,7 +405,7 @@ def orthogonal_indices(
         newshape[axis] = idxr.size
         npindexer.append(idxr.reshape(newshape))
 
-    # casting the output of broadcast_arrays is needed for numpy 1.25
+    # casting the output of broadcast_arrays is needed for numpy < 2
     return tuple(zindexer), tuple(np.broadcast_arrays(*npindexer))