diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index 2165737..2c7ea3e 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -4,7 +4,7 @@ dependencies:
   - coverage
   - lammps =2023.08.02
   - mpich
-  - numpy =1.26.0
+  - numpy =1.26.1
   - mpi4py =3.1.5
   - pympipool =0.7.2
   - ase =3.22.1
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index 04f9387..689799c 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -4,7 +4,7 @@ dependencies:
   - coverage
   - lammps =2023.08.02
   - openmpi
-  - numpy =1.26.0
+  - numpy =1.26.1
   - mpi4py =3.1.5
   - pympipool =0.7.2
   - ase =3.22.1
diff --git a/setup.py b/setup.py
index b88e84b..1118c7f 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@
     keywords='lammps, mpi4py',
     packages=find_packages(exclude=["*tests*"]),
     install_requires=[
-        "mpi4py==3.1.5", "pympipool==0.7.2", "numpy==1.26.0"
+        "mpi4py==3.1.5", "pympipool==0.7.2", "numpy==1.26.1"
     ],
     extras_require={
         "ase": ["ase==3.22.1", "scipy==1.11.3"],