diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
new file mode 100644
index 0000000..beee277
--- /dev/null
+++ b/.github/workflows/nightly.yml
@@ -0,0 +1,34 @@
+name: "Nightly deploy"
+
+on:
+  schedule:
+    - cron: '0 2 * * *'
+  workflow_dispatch:
+
+jobs:
+  nightly:
+    name: Deploy nightly
+    strategy:
+      fail-fast: false
+      matrix:
+        refs: [main, development]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ matrix.refs }}
+          submodules: 'recursive'
+      - name : Build
+        env:
+          PICO_SDK_PATH: ../pico-sdk
+        run: |
+           ./workflows/autobuild.sh pico
+           ./build_pico_hsm.sh
+      - name: Update nightly release
+        uses: pyTooling/Actions/releaser@main
+        with:
+          tag: nightly-${{ matrix.refs }}
+          rm: true
+          token: ${{ secrets.GITHUB_TOKEN }}
+          files: release/*.*
diff --git a/build_pico_hsm.sh b/build_pico_hsm.sh
index f67de9c..66af564 100755
--- a/build_pico_hsm.sh
+++ b/build_pico_hsm.sh
@@ -2,8 +2,14 @@
 
 VERSION_MAJOR="4"
 VERSION_MINOR="2"
+SUFFIX="${VERSION_MAJOR}.${VERSION_MINOR}"
+#if ! [[ -z "${GITHUB_SHA}" ]]; then
+#    SUFFIX="${SUFFIX}.${GITHUB_SHA}"
+#fi
 
 rm -rf release/*
+mkdir -p build_release
+mkdir -p release
 cd build_release
 
 for board in 0xcb_helios \
@@ -96,8 +102,7 @@ for board in 0xcb_helios \
     wiznet_w5100s_evb_pico
 do
     rm -rf *
-    PICO_SDK_PATH=~/Devel/pico/pico-sdk cmake .. -DPICO_BOARD=$board
-    make -kj20
-    mv pico_hsm.uf2 ../release/pico_hsm_$board-$VERSION_MAJOR.$VERSION_MINOR.uf2
-
+    PICO_SDK_PATH="${PICO_SDK_PATH:-../../pico-sdk}" cmake .. -DPICO_BOARD=$board
+    make -j`nproc`
+    mv pico_hsm.uf2 ../release/pico_hsm_$board-$SUFFIX.uf2
 done
diff --git a/workflows/autobuild.sh b/workflows/autobuild.sh
index eb9b4ae..d90e1a4 100755
--- a/workflows/autobuild.sh
+++ b/workflows/autobuild.sh
@@ -2,16 +2,38 @@
 
 git submodule update --init --recursive
 sudo apt update
+
+if [[ $1 == "pico" ]]; then
 sudo apt install -y cmake gcc-arm-none-eabi libnewlib-arm-none-eabi libstdc++-arm-none-eabi-newlib
 git clone https://github.com/raspberrypi/pico-sdk
 cd pico-sdk
 git submodule update --init
 cd ..
+git clone https://github.com/raspberrypi/picotool
+cd picotool
+git submodule update --init
 mkdir build
 cd build
-if [[ $1 == "pico" ]]; then
+cmake -DPICO_SDK_PATH=../../pico-sdk ..
+make -j`nproc`
+sudo make install
+cd ../..
+mkdir build_pico
+cd build_pico
 cmake -DPICO_SDK_PATH=../pico-sdk ..
-else
-cmake -DENABLE_EMULATION=1 ..
-fi
 make
+elif [[ $1 == "esp32" ]]; then
+sudo apt install -y git wget flex bison gperf python3 python3-pip python3-venv cmake ninja-build ccache libffi-dev libssl-dev dfu-util libusb-1.0-0
+git clone --recursive https://github.com/espressif/esp-idf.git
+cd esp-idf
+./install.sh esp32s3
+. ./export.sh
+cd ..
+idf.py set-target esp32s3
+idf.py all
+else
+mkdir build
+cd build
+cmake -DENABLE_EMULATION=1 ..
+make
+fi