diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index a850622..421163c 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 =0.7.1
   - ase =3.22.1
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index ccf6793..8ab426b 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 =0.7.1
   - ase =3.22.1