diff --git a/environments/access-med/environment.yml b/environments/access-med/environment.yml
index af182e8..86d0e5d 100644
--- a/environments/access-med/environment.yml
+++ b/environments/access-med/environment.yml
@@ -8,7 +8,7 @@ dependencies:
 - apscheduler
 - fs
 - python>=3.9
-- libnetcdf>=4.7.4=mpi_openmpi* # pinned for solver stability
+- libnetcdf=*=mpi_openmpi* # pinned for solver stability
 - pip
 - pytest >=3.9,!=6.0.0rc1,!=6.0.0
 - pytest-cov
@@ -52,10 +52,10 @@ dependencies:
 - objgraph ### Unlisted dependency of greenlet
 - asyncssh
 - gevent
-- openmpi==4.1.5
+- openmpi==4.1.6
 - mpi4py
-- esmf>=8.0.1=mpi_openmpi*
-- esmpy>=8.0.1=mpi_openmpi*
+- esmf=*=mpi_openmpi*
+- esmpy
 - pytest-json-report ### Needed for esmpy
 - xesmf >=0.7.1
 - xarray >=0.12.0