diff --git a/.azure-pipelines/azure-pipelines-win.yml b/.azure-pipelines/azure-pipelines-win.yml
index f9050c1..5c34a8a 100755
--- a/.azure-pipelines/azure-pipelines-win.yml
+++ b/.azure-pipelines/azure-pipelines-win.yml
@@ -27,31 +27,16 @@ jobs:
   timeoutInMinutes: 360
   variables:
     CONDA_BLD_PATH: D:\\bld\\
+    MINIFORGE_HOME: D:\Miniforge
     UPLOAD_TEMP: D:\\tmp
 
   steps:
 
-    - task: PythonScript@0
-      displayName: 'Download Miniforge'
-      inputs:
-        scriptSource: inline
-        script: |
-          import urllib.request
-          url = 'https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-Windows-x86_64.exe'
-          path = r"$(Build.ArtifactStagingDirectory)/Miniforge.exe"
-          urllib.request.urlretrieve(url, path)
-
-    - script: |
-        start /wait "" %BUILD_ARTIFACTSTAGINGDIRECTORY%\Miniforge.exe /InstallationType=JustMe /RegisterPython=0 /S /D=C:\Miniforge
-      displayName: Install Miniforge
-
-    - powershell: Write-Host "##vso[task.prependpath]C:\Miniforge\Scripts"
-      displayName: Add conda to PATH
-
     - script: |
         call ".scripts\run_win_build.bat"
       displayName: Run Windows build
       env:
+        MINIFORGE_HOME: $(MINIFORGE_HOME)
         PYTHONUNBUFFERED: 1
         CONFIG: $(CONFIG)
         CI: azure
diff --git a/.scripts/build_steps.sh b/.scripts/build_steps.sh
index 12647a5..827a29f 100755
--- a/.scripts/build_steps.sh
+++ b/.scripts/build_steps.sh
@@ -31,13 +31,13 @@ pkgs_dirs:
 solver: libmamba
 
 CONDARC
+mv /opt/conda/conda-meta/history /opt/conda/conda-meta/history.$(date +%Y-%m-%d-%H-%M-%S)
+echo > /opt/conda/conda-meta/history
+micromamba install --root-prefix ~/.conda --prefix /opt/conda \
+    --yes --override-channels --channel conda-forge --strict-channel-priority \
+    pip  python=3.12 conda-build conda-forge-ci-setup=4 "conda-build>=24.1"
 export CONDA_LIBMAMBA_SOLVER_NO_CHANNELS_FROM_INSTALLED=1
 
-mamba install --update-specs --yes --quiet --channel conda-forge --strict-channel-priority \
-    pip mamba conda-build conda-forge-ci-setup=4 "conda-build>=24.1"
-mamba update --update-specs --yes --quiet --channel conda-forge --strict-channel-priority \
-    pip mamba conda-build conda-forge-ci-setup=4 "conda-build>=24.1"
-
 # set up the condarc
 setup_conda_rc "${FEEDSTOCK_ROOT}" "${RECIPE_ROOT}" "${CONFIG_FILE}"
 
diff --git a/.scripts/run_osx_build.sh b/.scripts/run_osx_build.sh
index dfef5ae..7f948c4 100755
--- a/.scripts/run_osx_build.sh
+++ b/.scripts/run_osx_build.sh
@@ -7,28 +7,39 @@ source .scripts/logging_utils.sh
 set -xe
 
 MINIFORGE_HOME=${MINIFORGE_HOME:-${HOME}/miniforge3}
+MINIFORGE_HOME=${MINIFORGE_HOME%/} # remove trailing slash
 
-( startgroup "Installing a fresh version of Miniforge" ) 2> /dev/null
-
-MINIFORGE_URL="https://github.com/conda-forge/miniforge/releases/latest/download"
-MINIFORGE_FILE="Miniforge3-MacOSX-$(uname -m).sh"
-curl -L -O "${MINIFORGE_URL}/${MINIFORGE_FILE}"
-rm -rf ${MINIFORGE_HOME}
-bash $MINIFORGE_FILE -b -p ${MINIFORGE_HOME}
-
-( endgroup "Installing a fresh version of Miniforge" ) 2> /dev/null
+( startgroup "Provisioning base env with micromamba" ) 2> /dev/null
+MICROMAMBA_VERSION="1.5.10-0"
+if [[ "$(uname -m)" == "arm64" ]]; then
+  osx_arch="osx-arm64"
+else
+  osx_arch="osx-64"
+fi
+MICROMAMBA_URL="https://github.com/mamba-org/micromamba-releases/releases/download/${MICROMAMBA_VERSION}/micromamba-${osx_arch}"
+MAMBA_ROOT_PREFIX="${MINIFORGE_HOME}-micromamba-$(date +%s)"
+echo "Downloading micromamba ${MICROMAMBA_VERSION}"
+micromamba_exe="$(mktemp -d)/micromamba"
+curl -L -o "${micromamba_exe}" "${MICROMAMBA_URL}"
+chmod +x "${micromamba_exe}"
+echo "Creating environment"
+"${micromamba_exe}" create --yes --root-prefix "${MAMBA_ROOT_PREFIX}" --prefix "${MINIFORGE_HOME}" \
+  --channel conda-forge \
+  pip python=3.12 conda-build conda-forge-ci-setup=4 "conda-build>=24.1"
+echo "Moving pkgs cache from ${MAMBA_ROOT_PREFIX} to ${MINIFORGE_HOME}"
+mv "${MAMBA_ROOT_PREFIX}/pkgs" "${MINIFORGE_HOME}"
+echo "Cleaning up micromamba"
+rm -rf "${MAMBA_ROOT_PREFIX}" "${micromamba_exe}" || true
+( endgroup "Provisioning base env with micromamba" ) 2> /dev/null
 
 ( startgroup "Configuring conda" ) 2> /dev/null
 
-source ${MINIFORGE_HOME}/etc/profile.d/conda.sh
+source "${MINIFORGE_HOME}/etc/profile.d/conda.sh"
 conda activate base
 export CONDA_SOLVER="libmamba"
 export CONDA_LIBMAMBA_SOLVER_NO_CHANNELS_FROM_INSTALLED=1
 
-mamba install --update-specs --quiet --yes --channel conda-forge --strict-channel-priority \
-    pip mamba conda-build conda-forge-ci-setup=4 "conda-build>=24.1"
-mamba update --update-specs --yes --quiet --channel conda-forge --strict-channel-priority \
-    pip mamba conda-build conda-forge-ci-setup=4 "conda-build>=24.1"
+
 
 
 
diff --git a/.scripts/run_win_build.bat b/.scripts/run_win_build.bat
index c43b3db..d3c0345 100755
--- a/.scripts/run_win_build.bat
+++ b/.scripts/run_win_build.bat
@@ -3,30 +3,52 @@
 :: changes to this script, consider a proposal to conda-smithy so that other feedstocks can also
 :: benefit from the improvement.
 
-:: Note: we assume a Miniforge installation is available
-
 :: INPUTS (required environment variables)
 :: CONFIG: name of the .ci_support/*.yaml file for this job
 :: CI: azure, github_actions, or unset
+:: MINIFORGE_HOME: where to install the base conda environment
 :: UPLOAD_PACKAGES: true or false
 :: UPLOAD_ON_BRANCH: true or false
 
 setlocal enableextensions enabledelayedexpansion
 
+if "%MINIFORGE_HOME%"=="" set "MINIFORGE_HOME=%USERPROFILE%\Miniforge3"
+:: Remove trailing backslash, if present
+if "%MINIFORGE_HOME:~-1%"=="\" set "MINIFORGE_HOME=%MINIFORGE_HOME:~0,-1%"
+call :start_group "Provisioning base env with micromamba"
+set "MAMBA_ROOT_PREFIX=%MINIFORGE_HOME%-micromamba-%RANDOM%"
+set "MICROMAMBA_VERSION=1.5.10-0"
+set "MICROMAMBA_URL=https://github.com/mamba-org/micromamba-releases/releases/download/%MICROMAMBA_VERSION%/micromamba-win-64"
+set "MICROMAMBA_TMPDIR=%TMP%\micromamba-%RANDOM%"
+set "MICROMAMBA_EXE=%MICROMAMBA_TMPDIR%\micromamba.exe"
+
+echo Downloading micromamba %MICROMAMBA_VERSION%
+if not exist "%MICROMAMBA_TMPDIR%" mkdir "%MICROMAMBA_TMPDIR%"
+certutil -urlcache -split -f "%MICROMAMBA_URL%" "%MICROMAMBA_EXE%"
+if !errorlevel! neq 0 exit /b !errorlevel!
+
+echo Creating environment
+call "%MICROMAMBA_EXE%" create --yes --root-prefix "%MAMBA_ROOT_PREFIX%" --prefix "%MINIFORGE_HOME%" ^
+    --channel conda-forge ^
+    pip python=3.12 conda-build conda-forge-ci-setup=4 "conda-build>=24.1"
+if !errorlevel! neq 0 exit /b !errorlevel!
+echo Moving pkgs cache from %MAMBA_ROOT_PREFIX% to %MINIFORGE_HOME%
+move /Y "%MAMBA_ROOT_PREFIX%\pkgs" "%MINIFORGE_HOME%"
+if !errorlevel! neq 0 exit /b !errorlevel!
+echo Removing %MAMBA_ROOT_PREFIX%
+del /S /Q "%MAMBA_ROOT_PREFIX%"
+del /S /Q "%MICROMAMBA_TMPDIR%"
+call :end_group
+
 call :start_group "Configuring conda"
 
 :: Activate the base conda environment
-call activate base
+call "%MINIFORGE_HOME%\Scripts\activate.bat"
 :: Configure the solver
 set "CONDA_SOLVER=libmamba"
 if !errorlevel! neq 0 exit /b !errorlevel!
 set "CONDA_LIBMAMBA_SOLVER_NO_CHANNELS_FROM_INSTALLED=1"
 
-:: Provision the necessary dependencies to build the recipe later
-echo Installing dependencies
-mamba.exe install pip mamba conda-build conda-forge-ci-setup=4 "conda-build>=24.1" -c conda-forge --strict-channel-priority --yes
-if !errorlevel! neq 0 exit /b !errorlevel!
-
 :: Set basic configuration
 echo Setting up configuration
 setup_conda_rc .\ ".\recipe" .\.ci_support\%CONFIG%.yaml
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 26adeea..bcda6fb 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,5 +1,5 @@
 {% set version = "3.12.1" %}
-{% set build = 1 %}
+{% set build = 2 %}
 
 # mpi must be defined for conda-smithy lint
 {% set mpi = mpi or 'nompi' %}