diff --git a/CMakeExternals/Poco.cmake b/CMakeExternals/Poco.cmake
index dd5d7bcd72..6549e8f2fe 100644
--- a/CMakeExternals/Poco.cmake
+++ b/CMakeExternals/Poco.cmake
@@ -1,93 +1,93 @@
 #-----------------------------------------------------------------------------
 # Poco
 #-----------------------------------------------------------------------------
 
 if(MITK_USE_Poco)
 
   # Sanity checks
   if(DEFINED Poco_DIR AND NOT EXISTS ${Poco_DIR})
     message(FATAL_ERROR "Poco_DIR variable is defined but corresponds to non-existing directory")
   endif()
 
   set(proj Poco)
   set(proj_DEPENDENCIES )
   set(${proj}_DEPENDS ${proj})
 
   if(NOT DEFINED ${proj}_DIR)
 
     set(additional_cmake_args )
     if(CTEST_USE_LAUNCHERS)
       list(APPEND additional_cmake_args
         "-DCMAKE_PROJECT_${proj}_INCLUDE:FILEPATH=${CMAKE_ROOT}/Modules/CTestUseLaunchers.cmake"
       )
     endif()
 
     mitk_query_custom_ep_vars()
 
     set(ssl_args
       -DENABLE_CRYPTO:BOOL=OFF
       -DENABLE_NETSSL:BOOL=OFF
       -DENABLE_NETSSL_WIN:BOOL=OFF
     )
 
     if(OpenSSL_FOUND)
       set(ssl_args
         -DENABLE_CRYPTO:BOOL=ON
         -DENABLE_NETSSL:BOOL=ON
         -DFORCE_OPENSSL:BOOL=ON
       )
 
       if(OPENSSL_ROOT_DIR)
         list(APPEND ssl_args
           "-DOPENSSL_ROOT_DIR:PATH=${OPENSSL_ROOT_DIR}"
         )
       endif()
     endif()
 
     ExternalProject_Add(${proj}
       LIST_SEPARATOR ${sep}
-      URL ${MITK_THIRDPARTY_DOWNLOAD_PREFIX_URL}/poco-1.9.0.tar.gz
-      URL_MD5 1011839033f72de138f0c523c2caa121
+      GIT_REPOSITORY https://github.com/pocoproject/poco.git
+      GIT_TAG poco-1.12.1-release
       CMAKE_GENERATOR ${gen}
       CMAKE_GENERATOR_PLATFORM ${gen_platform}
       CMAKE_ARGS
         ${ep_common_args}
         ${additional_cmake_args}
         ${ssl_args}
         -DENABLE_XML:BOOL=ON
         -DENABLE_JSON:BOOL=ON
         -DENABLE_MONGODB:BOOL=OFF
         -DENABLE_PDF:BOOL=OFF
         -DENABLE_UTIL:BOOL=ON
         -DENABLE_NET:BOOL=ON
         -DENABLE_DATA:BOOL=OFF
         -DENABLE_DATA_SQLITE:BOOL=OFF
         -DENABLE_DATA_MYSQL:BOOL=OFF
         -DENABLE_DATA_ODBC:BOOL=OFF
         -DENABLE_SEVENZIP:BOOL=OFF
         -DENABLE_ZIP:BOOL=ON
         -DENABLE_APACHECONNECTOR:BOOL=OFF
         -DENABLE_CPPPARSER:BOOL=OFF
         -DENABLE_POCODOC:BOOL=OFF
         -DENABLE_PAGECOMPILER:BOOL=OFF
         -DENABLE_PAGECOMPILER_FILE2PAGE:BOOL=OFF
         ${${proj}_CUSTOM_CMAKE_ARGS}
       CMAKE_CACHE_ARGS
         ${ep_common_cache_args}
         ${${proj}_CUSTOM_CMAKE_CACHE_ARGS}
       CMAKE_CACHE_DEFAULT_ARGS
         ${ep_common_cache_default_args}
         ${${proj}_CUSTOM_CMAKE_CACHE_DEFAULT_ARGS}
       DEPENDS ${proj_DEPENDENCIES}
      )
 
     set(${proj}_DIR ${ep_prefix})
     mitkFunctionInstallExternalCMakeProject(${proj})
 
   else()
 
     mitkMacroEmptyExternalProject(${proj} "${proj_DEPENDENCIES}")
 
   endif()
 
 endif()