diff --git a/examples/plot_journal_kmeans.py b/examples/plot_journal_kmeans.py
index 5e739b2..cee89f3 100644
--- a/examples/plot_journal_kmeans.py
+++ b/examples/plot_journal_kmeans.py
@@ -66,8 +66,8 @@ def main():
         plt.scatter(X_cluster_i[:,2], X_cluster_i[:,3], c=colormap[i], s=40, marker=markers[i])
     
     ax = plt.gca()
-    ax.set_xlabel('Petal length')
-    ax.set_ylabel('Petal width')
+    ax.set_xlabel('Petal length (cm)')
+    ax.set_ylabel('Petal width (cm)')
     ax.set_xlim([0, 7.1])
     ax.set_ylim([0, 2.6])
     plt.savefig('out/kmeans_clusters.png', bbox_inches='tight', transparent=True)
diff --git a/requirements.txt b/requirements.txt
index 96c830a..1930350 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 tqdm>=4.66.5
 pdoc>=14.6.0
-numpy>=2.0.1
+numpy~=1.26
 imageio>=2.35.0
 jax[cpu]>=0.4.31
 pyBlindOpt>=0.1.3
diff --git a/setup.cfg b/setup.cfg
index 6ca79c0..2c1861e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -18,7 +18,7 @@ package_dir =
 packages = find:
 python_requires = >=3.8
 install_requires =
-    numpy >= 2.0.1
+    numpy~=1.26
     pyUTSAlgorithms>=0.1.3
 
 [options.packages.find]