diff --git a/Dockerfile.windows b/Dockerfile.windows
index cec0227..ccd5a3b 100644
--- a/Dockerfile.windows
+++ b/Dockerfile.windows
@@ -40,6 +40,7 @@ RUN git clone -b master https://github.com/monero-project/monero && \
 
 RUN make -j$THREADS -C /depends HOST=x86_64-w64-mingw32 NO_QT=1
 
+COPY contrib/QTBUG-92199-fix.patch .
 RUN git clone git://code.qt.io/qt/qt5.git -b ${QT_VERSION} --depth 1 && \
     cd qt5 && \
     git clone git://code.qt.io/qt/qtbase.git -b ${QT_VERSION} --depth 1 && \
@@ -50,6 +51,7 @@ RUN git clone git://code.qt.io/qt/qt5.git -b ${QT_VERSION} --depth 1 && \
     git clone git://code.qt.io/qt/qttranslations.git -b ${QT_VERSION} --depth 1 && \
     git clone git://code.qt.io/qt/qtxmlpatterns.git -b ${QT_VERSION} --depth 1 && \
     git clone git://code.qt.io/qt/qtwebsockets.git -b ${QT_VERSION} --depth 1 && \
+    cd qtbase && cat ../../QTBUG-92199-fix.patch && git apply ../../QTBUG-92199-fix.patch && cd .. && \
     OPENSSL_LIBS="-lssl -lcrypto -lws2_32" \
     ./configure --prefix=/depends/x86_64-w64-mingw32 -xplatform win32-g++ \
     -device-option CROSS_COMPILE=/usr/bin/x86_64-w64-mingw32- \
diff --git a/contrib/patches/polyseed/force-static-mingw.patch b/contrib/patches/polyseed/force-static-mingw.patch
new file mode 100644
index 0000000..f05cb2b
--- /dev/null
+++ b/contrib/patches/polyseed/force-static-mingw.patch
@@ -0,0 +1,23 @@
+--- a/include/polyseed.h
++++ b/include/polyseed.h
+@@ -93,13 +93,13 @@ Shared/static library definitions
+     - define POLYSEED_STATIC when linking to the static library
+ */
+ #if defined(_WIN32) || defined(__CYGWIN__)
+-    #ifdef POLYSEED_SHARED
+-        #define POLYSEED_API __declspec(dllexport)
+-    #elif !defined(POLYSEED_STATIC)
+-        #define POLYSEED_API __declspec(dllimport)
+-    #else
+-        #define POLYSEED_API
+-    #endif
++//    #ifdef POLYSEED_SHARED
++//        #define POLYSEED_API __declspec(dllexport)
++//    #elif !defined(POLYSEED_STATIC)
++//        #define POLYSEED_API __declspec(dllimport)
++//    #else
++          #define POLYSEED_API
++//    #endif
+     #define POLYSEED_PRIVATE
+ #else
+     #ifdef POLYSEED_SHARED
diff --git a/contrib/patches/polyseed/no_shared.patch b/contrib/patches/polyseed/no_shared.patch
new file mode 100644
index 0000000..8a5f73b
--- /dev/null
+++ b/contrib/patches/polyseed/no_shared.patch
@@ -0,0 +1,42 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -28,19 +28,20 @@ if(NOT CMAKE_BUILD_TYPE)
+   message(STATUS "Setting default build type: ${CMAKE_BUILD_TYPE}")
+ endif()
+
+-add_library(polyseed SHARED ${polyseed_sources})
+-set_property(TARGET polyseed PROPERTY POSITION_INDEPENDENT_CODE ON)
+-set_property(TARGET polyseed PROPERTY PUBLIC_HEADER include/polyseed.h)
+-include_directories(polyseed
+-  include/)
+-target_compile_definitions(polyseed PRIVATE POLYSEED_SHARED)
+-set_target_properties(polyseed PROPERTIES VERSION 1.0.0
+-                                          SOVERSION 1
+-                                          C_STANDARD 11
+-                                          C_STANDARD_REQUIRED ON)
++#add_library(polyseed SHARED ${polyseed_sources})
++#set_property(TARGET polyseed PROPERTY POSITION_INDEPENDENT_CODE ON)
++#set_property(TARGET polyseed PROPERTY PUBLIC_HEADER include/polyseed.h)
++#include_directories(polyseed
++#  include/)
++#target_compile_definitions(polyseed PRIVATE POLYSEED_SHARED)
++#set_target_properties(polyseed PROPERTIES VERSION 1.0.0
++#                                          SOVERSION 1
++#                                          C_STANDARD 11
++#                                          C_STANDARD_REQUIRED ON)
+
+ add_library(polyseed_static STATIC ${polyseed_sources})
+ set_property(TARGET polyseed_static PROPERTY POSITION_INDEPENDENT_CODE ON)
++set_property(TARGET polyseed_static PROPERTY PUBLIC_HEADER include/polyseed.h)
+ include_directories(polyseed_static
+   include/)
+ target_compile_definitions(polyseed_static PRIVATE POLYSEED_STATIC)
+@@ -57,7 +58,7 @@ target_link_libraries(polyseed-tests
+   PRIVATE polyseed_static)
+
+ include(GNUInstallDirs)
+-install(TARGETS polyseed polyseed_static
++install(TARGETS polyseed_static
+   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+   ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}