diff --git a/.scripts/build_steps.sh b/.scripts/build_steps.sh
index 0cb2268..d20d8f4 100755
--- a/.scripts/build_steps.sh
+++ b/.scripts/build_steps.sh
@@ -32,9 +32,9 @@ pkgs_dirs:
 CONDARC
 
 mamba install --update-specs --yes --quiet --channel conda-forge --strict-channel-priority \
-    pip mamba conda-build conda-forge-ci-setup=3
+    pip mamba conda-build boa conda-forge-ci-setup=3
 mamba update --update-specs --yes --quiet --channel conda-forge --strict-channel-priority \
-    pip mamba conda-build conda-forge-ci-setup
+    pip mamba conda-build boa conda-forge-ci-setup=3
 
 # set up the condarc
 setup_conda_rc "${FEEDSTOCK_ROOT}" "${RECIPE_ROOT}" "${CONFIG_FILE}"
@@ -63,7 +63,7 @@ if [[ "${BUILD_WITH_CONDA_DEBUG:-0}" == 1 ]]; then
     # Drop into an interactive shell
     /bin/bash
 else
-    conda build "${RECIPE_ROOT}" -m "${CI_SUPPORT}/${CONFIG}.yaml" \
+    conda mambabuild "${RECIPE_ROOT}" -m "${CI_SUPPORT}/${CONFIG}.yaml" \
         --suppress-variables ${EXTRA_CB_OPTIONS:-} \
         --clobber-file "${CI_SUPPORT}/clobber_${CONFIG}.yaml"
     ( startgroup "Validating outputs" ) 2> /dev/null