diff --git a/.github/workflows/bullseye.yml b/.github/workflows/bullseye.yml
new file mode 100644
index 0000000..cc736a3
--- /dev/null
+++ b/.github/workflows/bullseye.yml
@@ -0,0 +1,22 @@
+name: Debian Bullseye
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build:
+    name: Debian Bullseye
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Checkout submodules
+        run: |
+            git submodule init
+            git submodule update
+      - name: Docker Build
+        run: cd scripts && docker build -t chiaki-bullseye . -f Dockerfile.bullseye && cd ..
+      - name: Build and Test
+        run: docker run --rm -v "`pwd`:/build" -t chiaki-bullseye /bin/bash -c "cd /build && scripts/ci-script -DCHIAKI_USE_SYSTEM_JERASURE=ON"
+
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d59f031..f75bb09 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,7 @@ option(CHIAKI_LIB_ENABLE_MBEDTLS "Use mbedtls instead of OpenSSL as part of Chia
 option(CHIAKI_LIB_OPENSSL_EXTERNAL_PROJECT "Use OpenSSL as CMake external project" OFF)
 option(CHIAKI_GUI_ENABLE_SDL_GAMECONTROLLER "Use SDL Gamecontroller for Input" ON)
 option(CHIAKI_CLI_ARGP_STANDALONE "Search for standalone argp lib for CLI" OFF)
+tri_option(CHIAKI_USE_SYSTEM_JERASURE "Use system-provided jerasure instead of submodule" AUTO)
 
 set(CHIAKI_VERSION_MAJOR 1)
 set(CHIAKI_VERSION_MINOR 3)
@@ -52,6 +53,16 @@ elseif(CHIAKI_ENABLE_SWITCH)
 	set(CHIAKI_LIB_ENABLE_MBEDTLS ON)
 endif()
 
+if(CHIAKI_USE_SYSTEM_JERASURE)
+	if(CHIAKI_USE_SYSTEM_JERASURE STREQUAL AUTO)
+		find_package(Jerasure QUIET)
+		set(CHIAKI_USE_SYSTEM_JERASURE ${Jerasure_FOUND})
+	else()
+		find_package(Jerasure REQUIRED)
+		set(CHIAKI_USE_SYSTEM_JERASURE ON)
+	endif()
+endif()
+
 add_subdirectory(third-party)
 
 add_definitions(-DCHIAKI_VERSION_MAJOR=${CHIAKI_VERSION_MAJOR} -DCHIAKI_VERSION_MINOR=${CHIAKI_VERSION_MINOR} -DCHIAKI_VERSION_PATCH=${CHIAKI_VERSION_PATCH} -DCHIAKI_VERSION=\"${CHIAKI_VERSION}\")
diff --git a/cmake/FindJerasure.cmake b/cmake/FindJerasure.cmake
new file mode 100644
index 0000000..973b5a6
--- /dev/null
+++ b/cmake/FindJerasure.cmake
@@ -0,0 +1,26 @@
+# Provides Jerasure::Jerasure
+
+find_path(Jerasure_INCLUDE_DIR NAMES jerasure.h)
+find_path(Jerasure_INCLUDE_DIR2 NAMES galois.h PATH_SUFFIXES jerasure)
+find_library(Jerasure_LIBRARY NAMES Jerasure)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Jerasure
+	FOUND_VAR Jerasure_FOUND
+	REQUIRED_VARS
+		Jerasure_LIBRARY
+		Jerasure_INCLUDE_DIR
+		Jerasure_INCLUDE_DIR2
+)
+
+if(Jerasure_FOUND)
+	set(Jerasure_LIBRARIES ${Jerasure_LIBRARY})
+	set(Jerasure_INCLUDE_DIRS ${Jerasure_INCLUDE_DIR} ${Jerasure_INCLUDE_DIR2})
+	if(NOT TARGET Jerasure::Jerasure)
+		add_library(Jerasure::Jerasure UNKNOWN IMPORTED)
+		set_target_properties(Jerasure::Jerasure PROPERTIES
+		  IMPORTED_LOCATION "${Jerasure_LIBRARY}"
+		  INTERFACE_INCLUDE_DIRECTORIES "${Jerasure_INCLUDE_DIRS}"
+		)
+	endif()
+endif()
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index c002ab8..facead5 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -117,7 +117,7 @@ if(CHIAKI_ENABLE_SWITCH AND NOT CHIAKI_ENABLE_SWITCH_LINUX)
 endif()
 
 target_link_libraries(chiaki-lib protobuf-nanopb-static)
-target_link_libraries(chiaki-lib jerasure)
+target_link_libraries(chiaki-lib Jerasure::Jerasure)
 
 if(CHIAKI_LIB_ENABLE_OPUS)
 	target_link_libraries(chiaki-lib ${Opus_LIBRARIES})
diff --git a/scripts/Dockerfile.bullseye b/scripts/Dockerfile.bullseye
new file mode 100644
index 0000000..443c641
--- /dev/null
+++ b/scripts/Dockerfile.bullseye
@@ -0,0 +1,12 @@
+
+FROM debian:bullseye
+
+RUN apt-get update
+RUN apt-get -y install git g++ cmake pkg-config \
+	libjerasure-dev libnanopb-dev libavcodec-dev libopus-dev \
+	libssl-dev protobuf-compiler python3 python3-protobuf \
+	libevdev-dev libudev-dev \
+	qt5-default libqt5svg5-dev qtmultimedia5-dev libsdl2-dev
+
+CMD []
+
diff --git a/scripts/ci-script b/scripts/ci-script
new file mode 100755
index 0000000..e88acfb
--- /dev/null
+++ b/scripts/ci-script
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -e
+set -x
+
+mkdir build && cd build
+cmake .. -DCHIAKI_ENABLE_SETSU=ON "$@"
+make -j8
+make test
diff --git a/third-party/CMakeLists.txt b/third-party/CMakeLists.txt
index b1357d5..14e7f28 100644
--- a/third-party/CMakeLists.txt
+++ b/third-party/CMakeLists.txt
@@ -10,39 +10,43 @@ set(NANOPB_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/nanopb")
 set(NANOPB_SOURCE_DIR "${NANOPB_SOURCE_DIR}" PARENT_SCOPE)
 set(NANOPB_GENERATOR_PY "${NANOPB_SOURCE_DIR}/generator/nanopb_generator.py" PARENT_SCOPE)
 
-##################
-# gf-complete
-##################
+if(NOT CHIAKI_USE_SYSTEM_JERASURE)
+	##################
+	# gf-complete
+	##################
 
-set(GF_COMPLETE_SOURCE
-		gf-complete/src/gf.c
-		gf-complete/src/gf_wgen.c
-		gf-complete/src/gf_w4.c
-		gf-complete/src/gf_w8.c
-		gf-complete/src/gf_w16.c
-		gf-complete/src/gf_w32.c
-		gf-complete/src/gf_w64.c
-		gf-complete/src/gf_w128.c
-		gf-complete/src/gf_rand.c
-		gf-complete/src/gf_general.c
-		gf-complete/src/gf_cpu.c)
+	set(GF_COMPLETE_SOURCE
+			gf-complete/src/gf.c
+			gf-complete/src/gf_wgen.c
+			gf-complete/src/gf_w4.c
+			gf-complete/src/gf_w8.c
+			gf-complete/src/gf_w16.c
+			gf-complete/src/gf_w32.c
+			gf-complete/src/gf_w64.c
+			gf-complete/src/gf_w128.c
+			gf-complete/src/gf_rand.c
+			gf-complete/src/gf_general.c
+			gf-complete/src/gf_cpu.c)
 
-# TODO: support NEON
+	# TODO: support NEON
 
-add_library(gf_complete STATIC ${GF_COMPLETE_SOURCE})
-target_include_directories(gf_complete PUBLIC gf-complete/include)
+	add_library(gf_complete STATIC ${GF_COMPLETE_SOURCE})
+	target_include_directories(gf_complete PUBLIC gf-complete/include)
 
-##################
-# jerasure
-##################
+	##################
+	# jerasure
+	##################
 
-set(JERASURE_SOURCE
-		jerasure/src/galois.c
-		jerasure/src/jerasure.c
-		jerasure/src/reed_sol.c
-		jerasure/src/cauchy.c
-		jerasure/src/liberation.c)
+	set(JERASURE_SOURCE
+			jerasure/src/galois.c
+			jerasure/src/jerasure.c
+			jerasure/src/reed_sol.c
+			jerasure/src/cauchy.c
+			jerasure/src/liberation.c)
 
-add_library(jerasure STATIC ${JERASURE_SOURCE})
-target_include_directories(jerasure PUBLIC jerasure/include)
-target_link_libraries(jerasure gf_complete)
+	add_library(jerasure STATIC ${JERASURE_SOURCE})
+	target_include_directories(jerasure PUBLIC jerasure/include)
+	target_link_libraries(jerasure gf_complete)
+
+	add_library(Jerasure::Jerasure ALIAS jerasure)
+endif()