diff --git a/.appveyor.yml b/.appveyor.yml
index 2731ccb..7dc4799 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -5,6 +5,7 @@ image:
 branches:
   only:
     - master
+    - develop
     - /^v\d.*$/
     - /^deploy-test(-.*)?$/
 
diff --git a/.builds/common.yml b/.builds/common.yml
index 4681f14..0bce7cb 100644
--- a/.builds/common.yml
+++ b/.builds/common.yml
@@ -16,8 +16,9 @@ packages:
   - qt5-qtmultimedia-dev
   - ffmpeg-dev
   - sdl2-dev
-  - docker
+  - podman
   - fuse
+  - udev
   - argp-standalone
 
 artifacts:
@@ -25,10 +26,17 @@ artifacts:
   - Chiaki.AppImage
 
 tasks:
-  - start_docker: |
-      sudo service docker start
-      sudo chmod +s /usr/bin/docker # Yes, I know what I am doing
-      sudo service fuse start # Fuse for AppImages
+  - setup_podman: |
+      sudo rc-service udev start
+      sudo rc-service cgroups start
+      sudo rc-service fuse start # Fuse for AppImages
+      echo build:100000:65536 | sudo tee /etc/subuid
+      echo build:100000:65536 | sudo tee /etc/subgid
+      # https://www.kernel.org/doc/Documentation/networking/tuntap.txt
+      # for slirp4netns
+      sudo mkdir -p /dev/net
+      sudo mknod /dev/net/tun c 10 200
+      sudo chmod 0666 /dev/net/tun
   - local_build_and_test: |
       cd chiaki
       cmake -Bbuild -GNinja -DCHIAKI_ENABLE_CLI=ON -DCHIAKI_ENABLE_GUI=ON -DCHIAKI_CLI_ARGP_STANDALONE=ON
@@ -36,12 +44,12 @@ tasks:
       build/test/chiaki-unit
   - appimage: |
       cd chiaki
-      scripts/run-docker-build-appimage.sh
+      scripts/run-podman-build-appimage.sh
       cp appimage/Chiaki.AppImage ../Chiaki.AppImage
   - switch: |
       cd chiaki
-      scripts/switch/run-docker-build-chiaki.sh
+      scripts/switch/run-podman-build-chiaki.sh
       cp build_switch/switch/chiaki.nro ../chiaki.nro
   - bullseye: |
       cd chiaki
-      scripts/run-docker-build-bullseye.sh
+      scripts/run-podman-build-bullseye.sh
diff --git a/.builds/freebsd.yml b/.builds/freebsd.yml
index a105aec..c62a695 100644
--- a/.builds/freebsd.yml
+++ b/.builds/freebsd.yml
@@ -7,7 +7,7 @@ sources:
 packages:
   - cmake
   - protobuf
-  - py38-protobuf
+  - py39-protobuf
   - opus
   - qt5-core
   - qt5-qmake
diff --git a/scripts/appveyor-win.sh b/scripts/appveyor-win.sh
index 1361114..3951d84 100755
--- a/scripts/appveyor-win.sh
+++ b/scripts/appveyor-win.sh
@@ -26,7 +26,7 @@ ninja || exit 1
 ninja install || exit 1
 cd ../.. || exit 1
 
-wget https://mirror.firedaemon.com/OpenSSL/openssl-1.1.1n.zip && 7z x openssl-1.1.1n.zip || exit 1
+wget https://mirror.firedaemon.com/OpenSSL/openssl-1.1.1q.zip && 7z x openssl-1.1.1q.zip || exit 1
 
 wget https://www.libsdl.org/release/SDL2-devel-2.0.10-VC.zip && 7z x SDL2-devel-2.0.10-VC.zip || exit 1
 export SDL_ROOT="$APPVEYOR_BUILD_FOLDER/SDL2-2.0.10" || exit 1
@@ -41,7 +41,7 @@ cd .. || exit 1
 export PATH="$PWD/protoc/bin:$PATH" || exit 1
 
 PYTHON="C:/Python37/python.exe"
-"$PYTHON" -m pip install protobuf || exit 1
+"$PYTHON" -m pip install protobuf==3.19.5 || exit 1
 
 QT_PATH="C:/Qt/5.15/msvc2019_64"
 
diff --git a/scripts/build-appimage.sh b/scripts/build-appimage.sh
index dd01ef4..83903fd 100755
--- a/scripts/build-appimage.sh
+++ b/scripts/build-appimage.sh
@@ -2,9 +2,12 @@
 
 set -xe
 
+# sometimes there are errors in linuxdeploy in docker/podman when the appdir is on a mount
+appdir=${1:-`pwd`/appimage/appdir}
+
 mkdir appimage
 
-pip3 install --user protobuf
+pip3 install --user protobuf==3.19.5 # need support for python 3.6 for running on bionic
 scripts/fetch-protoc.sh appimage
 export PATH="`pwd`/appimage/protoc/bin:$PATH"
 scripts/build-ffmpeg.sh appimage
@@ -24,10 +27,14 @@ cmake \
 	-DCMAKE_INSTALL_PREFIX=/usr \
 	..
 cd ..
+
+# purge leftover proto/nanopb_pb2.py which may have been created with another protobuf version
+rm -fv third-party/nanopb/generator/proto/nanopb_pb2.py
+
 ninja -C build_appimage
 build_appimage/test/chiaki-unit
 
-DESTDIR=`pwd`/appimage/appdir ninja -C build_appimage install
+DESTDIR="${appdir}" ninja -C build_appimage install
 cd appimage
 
 curl -L -O https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage
@@ -41,5 +48,5 @@ set -e
 export LD_LIBRARY_PATH="`pwd`/sdl2-prefix/lib:$LD_LIBRARY_PATH"
 export EXTRA_QT_PLUGINS=opengl
 
-./linuxdeploy-x86_64.AppImage --appdir=appdir -e appdir/usr/bin/chiaki -d appdir/usr/share/applications/chiaki.desktop --plugin qt --output appimage
+./linuxdeploy-x86_64.AppImage --appdir="${appdir}" -e "${appdir}/usr/bin/chiaki" -d "${appdir}/usr/share/applications/chiaki.desktop" --plugin qt --output appimage
 mv Chiaki-*-x86_64.AppImage Chiaki.AppImage
diff --git a/scripts/build-common.sh b/scripts/build-common.sh
index 0eb87b9..dd4be2c 100755
--- a/scripts/build-common.sh
+++ b/scripts/build-common.sh
@@ -1,5 +1,8 @@
 #!/bin/bash
 
+# purge leftover proto/nanopb_pb2.py which may have been created with another protobuf version
+rm -fv third-party/nanopb/generator/proto/nanopb_pb2.py
+
 mkdir build && cd build || exit 1
 cmake \
 	-DCMAKE_BUILD_TYPE=Release \
diff --git a/scripts/run-docker-build-appimage.sh b/scripts/run-podman-build-appimage.sh
similarity index 58%
rename from scripts/run-docker-build-appimage.sh
rename to scripts/run-podman-build-appimage.sh
index b8625c8..5dea4b4 100755
--- a/scripts/run-docker-build-appimage.sh
+++ b/scripts/run-podman-build-appimage.sh
@@ -3,13 +3,13 @@
 set -xe
 cd "`dirname $(readlink -f ${0})`"
 
-docker build -t chiaki-bionic . -f Dockerfile.bionic
+podman build -t chiaki-bionic . -f Dockerfile.bionic
 cd ..
-docker run --rm \
+podman run --rm \
 	-v "`pwd`:/build/chiaki" \
 	-w "/build/chiaki" \
 	--device /dev/fuse \
 	--cap-add SYS_ADMIN \
 	-t chiaki-bionic \
-	/bin/bash -c "scripts/build-appimage.sh"
+	/bin/bash -c "scripts/build-appimage.sh /build/appdir"
 
diff --git a/scripts/run-docker-build-bullseye.sh b/scripts/run-podman-build-bullseye.sh
similarity index 61%
rename from scripts/run-docker-build-bullseye.sh
rename to scripts/run-podman-build-bullseye.sh
index fd19bb1..ad5c6d1 100755
--- a/scripts/run-docker-build-bullseye.sh
+++ b/scripts/run-podman-build-bullseye.sh
@@ -3,10 +3,11 @@
 set -xe
 cd "`dirname $(readlink -f ${0})`"
 
-docker build -t chiaki-bullseye . -f Dockerfile.bullseye
+podman build -t chiaki-bullseye . -f Dockerfile.bullseye
 cd ..
-docker run --rm -v "`pwd`:/build" chiaki-bullseye /bin/bash -c "
+podman run --rm -v "`pwd`:/build" chiaki-bullseye /bin/bash -c "
   cd /build &&
+  rm -fv third-party/nanopb/generator/proto/nanopb_pb2.py &&
   mkdir build_bullseye &&
   cmake -Bbuild_bullseye -GNinja -DCHIAKI_ENABLE_SETSU=ON -DCHIAKI_USE_SYSTEM_JERASURE=ON -DCHIAKI_USE_SYSTEM_NANOPB=ON &&
   ninja -C build_bullseye &&
diff --git a/scripts/switch/build.sh b/scripts/switch/build.sh
index f04f4b2..37b825d 100755
--- a/scripts/switch/build.sh
+++ b/scripts/switch/build.sh
@@ -16,6 +16,9 @@ build_chiaki (){
 	pushd "${BASEDIR}"
 		#rm -rf ./build
 
+		# purge leftover proto/nanopb_pb2.py which may have been created with another protobuf version
+		rm -fv third-party/nanopb/generator/proto/nanopb_pb2.py
+
 		cmake -B "${build}" \
 			-GNinja \
 			-DCMAKE_TOOLCHAIN_FILE=${toolchain} \
diff --git a/scripts/switch/push-docker-build-chiaki.sh b/scripts/switch/push-podman-build-chiaki.sh
similarity index 100%
rename from scripts/switch/push-docker-build-chiaki.sh
rename to scripts/switch/push-podman-build-chiaki.sh
diff --git a/scripts/switch/run-docker-build-chiaki.sh b/scripts/switch/run-podman-build-chiaki.sh
similarity index 93%
rename from scripts/switch/run-docker-build-chiaki.sh
rename to scripts/switch/run-podman-build-chiaki.sh
index c52933b..520188b 100755
--- a/scripts/switch/run-docker-build-chiaki.sh
+++ b/scripts/switch/run-podman-build-chiaki.sh
@@ -2,7 +2,7 @@
 
 cd "`dirname $(readlink -f ${0})`/../.."
 
-docker run \
+podman run \
 	-v "`pwd`:/build/chiaki" \
 	-w "/build/chiaki" \
 	-t \
diff --git a/switch/README.md b/switch/README.md
index f5fbe68..2307fa4 100644
--- a/switch/README.md
+++ b/switch/README.md
@@ -7,7 +7,7 @@ but the easiest way is to use the following container.
 Build Project
 -------------
 ```
-bash scripts/switch/run-docker-build-chiaki.sh
+bash scripts/switch/run-podman-build-chiaki.sh
 ```
 
 tools
@@ -15,7 +15,7 @@ tools
 Push to homebrew Netloader
 ```
 # where X.X.X.X is the IP of your switch
-bash scripts/switch/push-docker-build-chiaki.sh -a 192.168.0.200
+bash scripts/switch/push-podman-build-chiaki.sh -a 192.168.0.200
 ```
 
 Troubleshoot
diff --git a/third-party/CMakeLists.txt b/third-party/CMakeLists.txt
index b1f0b46..f6ebc40 100644
--- a/third-party/CMakeLists.txt
+++ b/third-party/CMakeLists.txt
@@ -4,11 +4,13 @@ if(NOT CHIAKI_USE_SYSTEM_NANOPB)
 	# nanopb
 	##################
 
+	add_definitions(-DPB_C99_STATIC_ASSERT) # Fix PB_STATIC_ASSERT on msvc without using C11 for now
 	add_subdirectory(nanopb EXCLUDE_FROM_ALL)
 	set(NANOPB_GENERATOR_PY "${CMAKE_CURRENT_SOURCE_DIR}/nanopb/generator/nanopb_generator.py" PARENT_SCOPE)
 	add_library(nanopb INTERFACE)
 	target_link_libraries(nanopb INTERFACE protobuf-nanopb-static)
 	target_include_directories(nanopb INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/nanopb")
+	target_compile_definitions(nanopb INTERFACE -DPB_C99_STATIC_ASSERT) # see above
 	add_library(Nanopb::nanopb ALIAS nanopb)
 endif()
 
diff --git a/third-party/nanopb b/third-party/nanopb
index ab19ecb..afc499f 160000
--- a/third-party/nanopb
+++ b/third-party/nanopb
@@ -1 +1 @@
-Subproject commit ab19ecbe1b9f377ab4ee8e762bfe16c39068ad68
+Subproject commit afc499f9a410fc9bbf6c9c48cdd8d8b199d49eb4