diff --git a/HPC_setup/requirements_HDFML_additionals.txt b/HPC_setup/requirements_HDFML_additionals.txt
index bfe946847815bc40ea901c19c4cd56117bf17983..dadd8403ce262dca4851dd87ad4793620bfe7d1b 100644
--- a/HPC_setup/requirements_HDFML_additionals.txt
+++ b/HPC_setup/requirements_HDFML_additionals.txt
@@ -4,7 +4,7 @@ cached-property==1.5.2
 iniconfig==1.1.1
 multiprocess==0.70.12.2
 ordered-set==4.0.2
-pathos==0.2.8
+pathos==0.2.7
 pyshp==2.1.3
 pytest-html==3.1.1
 pytest-lazy-fixture==0.6.3
diff --git a/HPC_setup/requirements_JUWELS_additionals.txt b/HPC_setup/requirements_JUWELS_additionals.txt
index bfe946847815bc40ea901c19c4cd56117bf17983..dadd8403ce262dca4851dd87ad4793620bfe7d1b 100644
--- a/HPC_setup/requirements_JUWELS_additionals.txt
+++ b/HPC_setup/requirements_JUWELS_additionals.txt
@@ -4,7 +4,7 @@ cached-property==1.5.2
 iniconfig==1.1.1
 multiprocess==0.70.12.2
 ordered-set==4.0.2
-pathos==0.2.8
+pathos==0.2.7
 pyshp==2.1.3
 pytest-html==3.1.1
 pytest-lazy-fixture==0.6.3
diff --git a/requirements.txt b/requirements.txt
index 7b9e676dd28804b7470637ee25e2d21e9b604f37..3a669e606e48d89dfb6fae673d97bd83b8fb7722 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ astropy==4.1
 auto_mix_prep==0.2.0
 Cartopy==0.18.0
 dask==2021.3.0
-dill==0.3.4
+dill==0.3.3
 fsspec==2021.11.0
 keras==2.6.0
 keras_nightly==2.5.0.dev2021032900
@@ -14,7 +14,7 @@ netcdf4==1.5.8
 numpy==1.19.5
 pandas==1.1.5
 partd==1.2.0
-pathos==0.2.8
+pathos==0.2.7
 psutil==5.8.0
 pydot==1.4.2
 pytest==6.2.2