diff --git a/cmake/OpenCVDetectInferenceEngine.cmake b/cmake/OpenCVDetectInferenceEngine.cmake
index d41f9243b4..8c17497a25 100644
--- a/cmake/OpenCVDetectInferenceEngine.cmake
+++ b/cmake/OpenCVDetectInferenceEngine.cmake
@@ -78,9 +78,9 @@ endif()
 
 if(INF_ENGINE_TARGET)
   if(NOT INF_ENGINE_RELEASE)
-    message(WARNING "InferenceEngine version have not been set, 2018R4 will be used by default. Set INF_ENGINE_RELEASE variable if you experience build errors.")
+    message(WARNING "InferenceEngine version have not been set, 2018R5 will be used by default. Set INF_ENGINE_RELEASE variable if you experience build errors.")
   endif()
-  set(INF_ENGINE_RELEASE "2018040000" CACHE STRING "Force IE version, should be in form YYYYAABBCC (e.g. 2018R2.0.2 -> 2018020002)")
+  set(INF_ENGINE_RELEASE "2018050000" CACHE STRING "Force IE version, should be in form YYYYAABBCC (e.g. 2018R2.0.2 -> 2018020002)")
   set_target_properties(${INF_ENGINE_TARGET} PROPERTIES
     INTERFACE_COMPILE_DEFINITIONS "HAVE_INF_ENGINE=1;INF_ENGINE_RELEASE=${INF_ENGINE_RELEASE}"
   )
diff --git a/modules/dnn/src/op_inf_engine.cpp b/modules/dnn/src/op_inf_engine.cpp
index bbe712c133..8bab885014 100644
--- a/modules/dnn/src/op_inf_engine.cpp
+++ b/modules/dnn/src/op_inf_engine.cpp
@@ -235,6 +235,12 @@ const std::string& InfEngineBackendNet::getName() const noexcept
     return name;
 }
 
+InferenceEngine::StatusCode InfEngineBackendNet::serialize(const std::string&, const std::string&, InferenceEngine::ResponseDesc*) const noexcept
+{
+    CV_Error(Error::StsNotImplemented, "");
+    return InferenceEngine::StatusCode::OK;
+}
+
 size_t InfEngineBackendNet::layerCount() noexcept
 {
     return const_cast<const InfEngineBackendNet*>(this)->layerCount();
diff --git a/modules/dnn/src/op_inf_engine.hpp b/modules/dnn/src/op_inf_engine.hpp
index e5542b3296..a1144b4b53 100644
--- a/modules/dnn/src/op_inf_engine.hpp
+++ b/modules/dnn/src/op_inf_engine.hpp
@@ -26,10 +26,11 @@
 #define INF_ENGINE_RELEASE_2018R2 2018020000
 #define INF_ENGINE_RELEASE_2018R3 2018030000
 #define INF_ENGINE_RELEASE_2018R4 2018040000
+#define INF_ENGINE_RELEASE_2018R5 2018050000
 
 #ifndef INF_ENGINE_RELEASE
-#warning("IE version have not been provided via command-line. Using 2018R4 by default")
-#define INF_ENGINE_RELEASE INF_ENGINE_RELEASE_2018R4
+#warning("IE version have not been provided via command-line. Using 2018R5 by default")
+#define INF_ENGINE_RELEASE INF_ENGINE_RELEASE_2018R5
 #endif
 
 #define INF_ENGINE_VER_MAJOR_GT(ver) (((INF_ENGINE_RELEASE) / 10000) > ((ver) / 10000))
@@ -68,6 +69,8 @@ public:
 
     virtual InferenceEngine::InputInfo::Ptr getInput(const std::string &inputName) const noexcept;
 
+    virtual InferenceEngine::StatusCode serialize(const std::string &xmlPath, const std::string &binPath, InferenceEngine::ResponseDesc* resp) const noexcept;
+
     virtual void getName(char *pName, size_t len) noexcept;
 
     virtual void getName(char *pName, size_t len) const noexcept;