diff --git a/conda-env.yml b/conda-env.yml
index b4044f3d5..c05afa079 100644
--- a/conda-env.yml
+++ b/conda-env.yml
@@ -11,7 +11,8 @@ dependencies:
 - gh
 - mypy
 - conda-forge::numpy
-- pocl<6
+# See https://github.com/illinois-ceesd/mirgecom/pull/1055:
+- pocl=5.0=*_6
 - clinfo
 - pudb
 - islpy
@@ -23,7 +24,8 @@ dependencies:
 - pytest
 - pylint
 - pydocstyle
-- cantera=3.0
+# See https://github.com/conda-forge/cantera-feedstock/issues/46 why we need 3.0.0:
+- cantera=3.0.0
 - h5py * nompi_*  # Make sure cantera does not pull in MPI through h5py
 - gmsh
 - vtk