diff --git a/environments/analysis3/environment.yml b/environments/analysis3/environment.yml
index 6d4dc26..9097ae1 100644
--- a/environments/analysis3/environment.yml
+++ b/environments/analysis3/environment.yml
@@ -128,7 +128,7 @@ dependencies:
 - panel
 - xrft
 - git
-- openmpi
+- openmpi==4.1.6
 - mpi4py
 - palettable
 - xlrd
@@ -168,7 +168,7 @@ dependencies:
 - rasterstats
 - windrose
 - pyam
-- pyarrow
+- pyarrow>=16.1
 - python-gist
 - celluloid
 - jags
diff --git a/scripts/dev_prep.sh b/scripts/dev_prep.sh
index 88b9067..51c437e 100644
--- a/scripts/dev_prep.sh
+++ b/scripts/dev_prep.sh
@@ -158,7 +158,7 @@ _initialise() {
     echo "Copying external files"
     for f in "${outside_files_to_copy[@]}"; do
         mkdir -p "${OVERLAY_BASE}"/$( dirname "${f#/g/}" )
-        cp "${f}" "${OVERLAY_BASE}"/"${f#/g/}"
+        cp -r "${f}" "${OVERLAY_BASE}"/"${f#/g/}"
     done
 
     echo "Unsquashing unstable environment"