diff --git a/.azure-pipelines/azure-pipelines-win.yml b/.azure-pipelines/azure-pipelines-win.yml
index 2d25a2d..b1a5672 100755
--- a/.azure-pipelines/azure-pipelines-win.yml
+++ b/.azure-pipelines/azure-pipelines-win.yml
@@ -20,27 +20,11 @@ jobs:
 
   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 af0b9ac..f8051ab 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}"
 
@@ -73,8 +73,8 @@ else
         --extra-meta flow_run_id="${flow_run_id:-}" remote_url="${remote_url:-}" sha="${sha:-}"
     ( startgroup "Inspecting artifacts" ) 2> /dev/null
 
-    # inspect_artifacts was only added in conda-forge-ci-setup 4.6.0
-    command -v inspect_artifacts >/dev/null 2>&1 && inspect_artifacts || echo "inspect_artifacts needs conda-forge-ci-setup >=4.6.0"
+    # inspect_artifacts was only added in conda-forge-ci-setup 4.9.4
+    command -v inspect_artifacts >/dev/null 2>&1 && inspect_artifacts --recipe-dir "${RECIPE_ROOT}" -m "${CONFIG_FILE}" || echo "inspect_artifacts needs conda-forge-ci-setup >=4.9.4"
 
     ( endgroup "Inspecting artifacts" ) 2> /dev/null
     ( startgroup "Validating outputs" ) 2> /dev/null
diff --git a/.scripts/run_win_build.bat b/.scripts/run_win_build.bat
index 33f3277..752eec6 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
@@ -54,8 +76,8 @@ conda-build.exe "recipe" -m .ci_support\%CONFIG%.yaml --suppress-variables %EXTR
 if !errorlevel! neq 0 exit /b !errorlevel!
 
 call :start_group "Inspecting artifacts"
-:: inspect_artifacts was only added in conda-forge-ci-setup 4.6.0
-WHERE inspect_artifacts >nul 2>nul && inspect_artifacts || echo "inspect_artifacts needs conda-forge-ci-setup >=4.6.0"
+:: inspect_artifacts was only added in conda-forge-ci-setup 4.9.4
+WHERE inspect_artifacts >nul 2>nul && inspect_artifacts --recipe-dir ".\recipe" -m .ci_support\%CONFIG%.yaml || echo "inspect_artifacts needs conda-forge-ci-setup >=4.9.4"
 call :end_group
 
 :: Prepare some environment variables for the upload step
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index ee1c7f2..b4aba78 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,4 +1,4 @@
-{% set version = "19.1.2" %}
+{% set version = "19.1.3" %}
 
 package:
   name: flang-split
@@ -6,7 +6,7 @@ package:
 
 source:
   url: https://github.com/llvm/llvm-project/archive/refs/tags/llvmorg-{{ version.replace(".rc", "-rc") }}.tar.gz
-  sha256: 622cb6c5e95a3bb7e9876c4696a65671f235bd836cfd0c096b272f6c2ada41e7
+  sha256: e5106e2bef341b3f5e41340e4b6c6a58259f4021ad801acf14e88f1a84567b05
 
 build:
   number: 0