diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index 20aa1dd5..424c216d 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -8,4 +8,4 @@ dependencies:
   - mpich
   - numpy =1.23.5
   - mpi4py =3.1.4
-  - pympipool =0.5.5
\ No newline at end of file
+  - pympipool =0.5.6
\ No newline at end of file
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index a55ca12d..42ed35e6 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -8,4 +8,4 @@ dependencies:
   - openmpi
   - numpy =1.23.5
   - mpi4py =3.1.4
-  - pympipool =0.5.5
\ No newline at end of file
+  - pympipool =0.5.6
\ No newline at end of file
diff --git a/binder/environment.yml b/binder/environment.yml
index 75306b83..1bf83124 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -5,4 +5,4 @@ dependencies:
 - numpy =1.23.5
 - lammps >=2021.05.27
 - mpi4py =3.1.4
-- pympipool =0.5.5
+- pympipool =0.5.6
diff --git a/setup.py b/setup.py
index 88b92a50..b0873dd6 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,7 @@
     keywords='lammps, mpi4py',
     packages=find_packages(exclude=["*tests*"]),
     install_requires=[
-        "mpi4py==3.1.4", "pympipool==0.5.5", "numpy==1.23.5"
+        "mpi4py==3.1.4", "pympipool==0.5.6", "numpy==1.23.5"
     ],
     cmdclass=versioneer.get_cmdclass(),
 )