diff --git a/.github/workflows/test-sync.yml b/.github/workflows/test-sync.yml
index 6d0f396..48a8aa1 100644
--- a/.github/workflows/test-sync.yml
+++ b/.github/workflows/test-sync.yml
@@ -286,6 +286,63 @@ jobs:
           build/*.log
           build/data/
 
+  sync-test-ubuntu-tysan:
+    timeout-minutes: 60
+    runs-on: ubuntu-22.04
+
+    steps:
+    - name: Install dependencies
+      run: |
+        sudo apt update
+        sudo apt install -y git build-essential cmake libuv1-dev libzmq3-dev libgss-dev libcurl4-openssl-dev libidn2-0-dev
+
+    - name: Install clang
+      run: |
+        wget https://apt.llvm.org/llvm.sh
+        chmod +x llvm.sh
+        sudo ./llvm.sh 21 all
+
+    - name: Checkout repository
+      uses: actions/checkout@v4
+      with:
+        submodules: recursive
+
+    - name: Build p2pool
+      run: |
+        mkdir build
+        cd build
+        cmake .. -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_COMPILER=clang-21 -DCMAKE_CXX_COMPILER=clang++-21 -DDEV_TEST_SYNC=ON -DDEV_DEBUG=ON -DDEV_WITH_TYSAN=ON -DCMAKE_C_FLAGS="-fno-omit-frame-pointer -fsanitize=type -O0 -g3" -DCMAKE_CXX_FLAGS="-fno-omit-frame-pointer -fsanitize=type -O0 -g3" -DWITH_LTO=OFF -DWITH_INDEXED_HASHES=ON -DCMAKE_POLICY_VERSION_MINIMUM="3.5"
+        make -j$(nproc) p2pool
+
+    - name: Run p2pool
+      run: |
+        cd build
+        mkdir data
+        python ../tests/src/stratum_dummy.py 1 &
+        python ../tests/src/stratum_dummy.py 2 &
+        python ../tests/src/stratum_dummy.py 3 &
+        sudo sysctl vm.mmap_rnd_bits=28
+        TYSAN_OPTIONS=print_stacktrace=1 ./p2pool --host node.monerodevs.org --rpc-port 18089 --zmq-port 18084 --host node.richfowler.net --rpc-port 18089 --zmq-port 18084 --rpc-ssl --wallet 44MnN1f3Eto8DZYUWuE5XZNUtE3vcRzt2j6PzqWpPau34e6Cf4fAxt6X2MBmrm6F9YMEiMNjN6W4Shn4pLcfNAja621jwyg ${{ secrets.MM_PARAMS }} --out-peers 50 --data-api data --local-api --loglevel 6 --light-mode 2> stderr.log
+
+    - name: Check synchronization
+      run: |
+        cd build
+        grep 'Synchronization finished successfully' p2pool.log
+
+    - name: Check p2pool.log for errors
+      run: |
+        cd build
+        ../scripts/workflows/test-sync-check.sh
+
+    - name: Archive p2pool.log
+      if: '!cancelled()'
+      uses: actions/upload-artifact@v4
+      with:
+        name: p2pool_ubuntu_data_tysan
+        path: |
+          build/*.log
+          build/data/
+
   sync-test-macos:
 
     timeout-minutes: 120
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3088734..7b2759a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,6 +27,7 @@ option(DEV_WITH_TSAN "[Developer only] Compile with thread sanitizer" OFF)
 option(DEV_WITH_MSAN "[Developer only] Compile with memory sanitizer" OFF)
 option(DEV_WITH_UBSAN "[Developer only] Compile with undefined behavior sanitizer" OFF)
 option(DEV_WITH_ASAN "[Developer only] Compile with address sanitizer" OFF)
+option(DEV_WITH_TYSAN "[Developer only] Compile with type sanitizer" OFF)
 option(DEV_CLANG_TIDY "[Developer only] Compile for clang-tidy" OFF)
 option(DEV_TRACK_MEMORY "[Developer only] Track memory allocations" OFF)
 option(DEV_DEBUG "[Developer only] Compile a debug build" OFF)
diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index ce688b9..370e222 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -113,6 +113,10 @@ elseif (CMAKE_CXX_COMPILER_ID MATCHES Clang)
 		set(GENERAL_FLAGS "${GENERAL_FLAGS} -mfix-cortex-a53-835769")
 	endif()
 
+	if (DEV_WITH_TYSAN)
+		set(GENERAL_FLAGS "${GENERAL_FLAGS} -fno-omit-frame-pointer -fsanitize=type")
+	endif()
+
 	set(WARNING_FLAGS "-Wall -Wextra -Wno-unused-function -Wno-undefined-internal -Wno-unknown-warning-option -Wno-nan-infinity-disabled -Wunreachable-code-aggressive -Wmissing-prototypes -Wmissing-variable-declarations -Werror")
 
 	if (NOT (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 20))
@@ -123,7 +127,7 @@ elseif (CMAKE_CXX_COMPILER_ID MATCHES Clang)
 		set(WARNING_FLAGS "-w")
 	endif()
 
-	if (DEV_WITH_MSAN OR DEV_DEBUG OR (CMAKE_BUILD_TYPE STREQUAL "Debug") OR (CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo"))
+	if (DEV_WITH_MSAN OR DEV_WITH_TYSAN OR DEV_DEBUG OR (CMAKE_BUILD_TYPE STREQUAL "Debug") OR (CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo"))
 		add_definitions(-DDEBUG_BUILD)
 		if (CMAKE_BUILD_TYPE STREQUAL "Debug")
 			set(OPTIMIZATION_FLAGS "-O0")