diff --git a/CMakeExternals/PCRE.cmake b/CMakeExternals/PCRE.cmake
index c8a37b69c9..5a70f9b497 100644
--- a/CMakeExternals/PCRE.cmake
+++ b/CMakeExternals/PCRE.cmake
@@ -1,69 +1,69 @@
 #--------------------------------------------------------------------------
 #  PCRE (Perl Compatible Regular Expressions)
 #--------------------------------------------------------------------------
 if(MITK_USE_PCRE)
   if(DEFINED PCRE_DIR AND NOT EXISTS ${PCRE_DIR})
       message(FATAL_ERROR "PCRE_DIR variable is defined but corresponds to non-existing directory")
    endif()
 
   set(proj PCRE)
   set(${proj}_DEPENDENCIES "")
   set(${proj}_DEPENDS ${proj})
 
   if(NOT PCRE_DIR)
 
     if(UNIX)
       # Some other projects (e.g. Swig) require a pcre-config script which is not
       # generated when using the CMake build system.
       set(configure_cmd
         CONFIGURE_COMMAND <SOURCE_DIR>/./configure
         CC=${CMAKE_C_COMPILER}${CMAKE_C_COMPILER_ARG1}
         CFLAGS=-fPIC
         "CXXFLAGS=-fPIC ${MITK_CXX${MITK_CXX_STANDARD}_FLAG} ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE}"
         "LDFLAGS=${CMAKE_LINKER_FLAGS} ${CMAKE_LINKER_FLAGS_RELEASE} ${_install_rpath_linkflag}"
         CXX=${CMAKE_CXX_COMPILER}${CMAKE_CXX_COMPILER_ARG1}
         --prefix=<INSTALL_DIR>
         --disable-shared
         --enable-jit
       )
     else()
 
       set(additional_cmake_args )
       if(CTEST_USE_LAUNCHERS)
         list(APPEND additional_cmake_args
           "-DCMAKE_PROJECT_${proj}_INCLUDE:FILEPATH=${CMAKE_ROOT}/Modules/CTestUseLaunchers.cmake"
         )
       endif()
 
       set(configure_cmd
         CMAKE_GENERATOR ${gen}
         CMAKE_GENERATOR_PLATFORM ${gen_platform}
         CMAKE_ARGS
           ${ep_common_args}
           ${additional_cmake_args}
          "-DCMAKE_C_FLAGS:STRING=${CMAKE_C_FLAGS} -fPIC"
          -DBUILD_SHARED_LIBS:BOOL=OFF
          -DPCRE_BUILD_PCREGREP:BOOL=OFF
          -DPCRE_BUILD_TESTS:BOOL=OFF
          -DPCRE_SUPPORT_JIT:BOOL=ON
        CMAKE_CACHE_ARGS
          ${ep_common_cache_args}
        CMAKE_CACHE_DEFAULT_ARGS
          ${ep_common_cache_default_args}
       )
     endif()
 
     ExternalProject_add(${proj}
       LIST_SEPARATOR ${sep}
-      URL ${MITK_THIRDPARTY_DOWNLOAD_PREFIX_URL}/pcre-8.35.tar.gz
-      URL_MD5 "ed58bcbe54d3b1d59e9f5415ef45ce1c"
+      URL ${MITK_THIRDPARTY_DOWNLOAD_PREFIX_URL}/pcre-8.45.tar.gz
+      URL_MD5 "01b80f8177ab91da63e7e5c5d5dfcb83"
       ${configure_cmd}
       DEPENDS "${${proj}_DEPENDENCIES}"
       )
 
     set(PCRE_DIR ${ep_prefix})
 
   else()
     mitkMacroEmptyExternalProject(${proj} "${${proj}_DEPENDENCIES}")
   endif()
 endif()
diff --git a/CMakeExternals/SWIG.cmake b/CMakeExternals/SWIG.cmake
index 7f91487f13..00c0bdbcb5 100644
--- a/CMakeExternals/SWIG.cmake
+++ b/CMakeExternals/SWIG.cmake
@@ -1,78 +1,78 @@
 #------------------------------------------------------------
 # SWIG (Simple Wrapper Interface Generator)
 #-----------------------------------------------------------
 if(MITK_USE_SWIG)
   if(DEFINED SWIG_DIR AND NOT EXISTS ${SWIG_DIR})
     message(FATAL_ERROR "SWIG_DIR variable is defined but corresponds to non-existing directory")
   endif()
 
   set(SWIG_TARGET_VERSION 4.2.0)
   set(proj SWIG)
   if(WIN32)
     set(proj_DEPENDENCIES)
   else()
     set(proj_DEPENDENCIES PCRE)
   endif()
   set(SWIG_DEPENDS ${proj})
 
   if(NOT SWIG_DIR)
 
     # We don't "install" SWIG in the common install prefix,
     # since it is only used as a tool during the MITK super-build
     # to generate the Python wrappings for some projects.
 
     # binary SWIG for windows
     if(WIN32)
       set(swig_source_dir ${CMAKE_CURRENT_BINARY_DIR}/swigwin-${SWIG_TARGET_VERSION})
 
       # swig.exe available as pre-built binary on Windows:
       ExternalProject_Add(${proj}
         #URL ${MITK_THIRDPARTY_DOWNLOAD_PREFIX_URL}/swigwin-${SWIG_TARGET_VERSION}.zip
         URL https://netcologne.dl.sourceforge.net/project/swig/swigwin/swigwin-4.2.0/swigwin-4.2.0.zip
         #URL_MD5 "009926b512aee9318546bdd4c7eab6f9"
         CONFIGURE_COMMAND ""
         BUILD_COMMAND ""
         INSTALL_COMMAND ""
         )
 
       ExternalProject_Get_Property(${proj} source_dir)
       set(SWIG_DIR ${source_dir})
       set(SWIG_EXECUTABLE ${source_dir}/swig.exe)
 
     else()
       # swig uses bison find it by cmake and pass it down
       find_package(BISON)
       set(BISON_FLAGS "" CACHE STRING "Flags used by bison")
       mark_as_advanced( BISON_FLAGS)
 
       ExternalProject_add(${proj}
         LIST_SEPARATOR ${sep}
         #URL ${MITK_THIRDPARTY_DOWNLOAD_PREFIX_URL}/swig-${SWIG_TARGET_VERSION}.tar.gz
-        URL https://github.com/swig/swig/archive/refs/tags/v4.2.0.tar.gz
+        URL https://deac-ams.dl.sourceforge.net/project/swig/swig/swig-4.2.0/swig-4.2.0.tar.gz
         #URL_MD5 7c3e46cb5af2b469722cafa0d91e127b
         # Switching to Git would require additional prerequisites:
         #   - autotools-dev
         #   - automake
         # GIT_REPOSITORY https://github.com/swig/swig.git
         # GIT_TAG v${SWIG_TARGET_VERSION}
         INSTALL_DIR ${ep_prefix}/src/${proj}-install
         CONFIGURE_COMMAND <SOURCE_DIR>/./configure
                           CC=${CMAKE_C_COMPILER}${CMAKE_C_COMPILER_ARG1}
                           LDFLAGS=${CMAKE_LINKER_FLAGS} ${CMAKE_LINKER_FLAGS_RELEASE}
                           CXX=${CMAKE_CXX_COMPILER}${CMAKE_CXX_COMPILER_ARG1}
                             "--prefix=<INSTALL_DIR>"
                             "--with-pcre-prefix=${PCRE_DIR}"
                             --without-octave
                             "--with-python=${Python3_EXECUTABLE}"
         DEPENDS ${proj_DEPENDENCIES}
         )
 
       ExternalProject_Get_Property(${proj} install_dir)
       set(SWIG_DIR ${install_dir}/share/swig/${SWIG_TARGET_VERSION})
       set(SWIG_EXECUTABLE ${install_dir}/bin/swig)
 
     endif()
   else()
     mitkMacroEmptyExternalProject(${proj} "${proj_DEPENDENCIES}")
   endif()
 endif()