diff --git a/BaseClient/util.h b/BaseClient/util.h
index e940b792..9982dc35 100644
--- a/BaseClient/util.h
+++ b/BaseClient/util.h
@@ -68,7 +68,7 @@ const char CYBS_C_USE_AKAMAI[]              = "sendToAkamai";
 
 
 /* Please do not modify these values */
-static const wchar_t CLIENT_LIBRARY_VERSION_VALUE[] = L"6.0.3";
+static const wchar_t CLIENT_LIBRARY_VERSION_VALUE[] = L"6.0.4";
 static const wchar_t CLIENT_LIBRARY_VALUE[] = L"C SOAP";
 static const wchar_t CLIENT_APPLICATION_VALUE[] = L"Simple Order API";
 
diff --git a/Makefile b/Makefile
index 4f780b08..f140577b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-API_VERSION    = 6.0.3
+API_VERSION    = 6.0.4
 PROD_NAME      = simapi-c
 ZIP_NAME       = $(PROD_NAME)-linux
 DIST_BASE      = builds
diff --git a/NVPTest/NVPTest.cpp b/NVPTest/NVPTest.cpp
index 4d260c1c..3fbe2992 100644
--- a/NVPTest/NVPTest.cpp
+++ b/NVPTest/NVPTest.cpp
@@ -113,7 +113,7 @@ std::wstring runAuth(CybsMap *cfgMap) {
 	request[L"shipTo_country"] = L"US";
 	request[L"card_accountNumber"] = L"xxxxxxxxxxxxxxxx";
 	request[L"card_expirationMonth"] = L"12";
-	request[L"card_expirationYear"] = L"2020";
+	request[L"card_expirationYear"] = L"2021";
 	request[L"purchaseTotals_currency"] = L"USD";
 	request[L"item_0_unitPrice"] = L"12.34";
 	request[L"ccAuthService_run"] = L"true";
diff --git a/README.md b/README.md
index fc43aa9f..3a256f4a 100644
--- a/README.md
+++ b/README.md
@@ -77,6 +77,15 @@ For running the sample follow "Running the Samples" section.
 
 NOTE:To run NVPTest samples,Please provide a test account number instead of masked account number"xxxxx" in NVPTest.cpp file else transaction fails.
 
+## Meta Key support
+Meta Key is a key generated by an entity that can be used to authenticate on behalf of other entities provided that the entity which holds key is a parent entity or associated as a partner.
+
+SOAPI Cplusplus SDK supports meta key by default. Additional detail regarding cybs.ini changes.
+
+merchantID=<comment/remove this line> and send merchantID in request. <br>
+keysDirectory=\<Directory where .p12 is present><br>
+keyPassword=\<Password of .p12 file><br>
+keyFilename=\<Downloaded meta key file for portfolio or Account MID><br>
 
 
 ##Generating stub code for different wsdl version:
diff --git a/mkinstall.bat b/mkinstall.bat
index 3377482e..8b24d0ae 100644
--- a/mkinstall.bat
+++ b/mkinstall.bat
@@ -5,7 +5,7 @@ rem This is the packaging batch file for Windows.
 rem For Linux, run "make" in the client subdirectory.
 rem *************************************************
 set platform=%1
-set CLIENT_LIBRARY_VERSION_VALUE=6.0.3
+set CLIENT_LIBRARY_VERSION_VALUE=6.0.4
 
 set BUILD_DIR=builds
 if "%platform%"=="win32" (
diff --git a/resources/auth.xml b/resources/auth.xml
index 8bc1f9bf..9a7e8b2e 100644
--- a/resources/auth.xml
+++ b/resources/auth.xml
@@ -36,7 +36,7 @@
 	<ns2:card>
 		<ns2:accountNumber>4111111111111111</ns2:accountNumber>
 		<ns2:expirationMonth>12</ns2:expirationMonth>
-		<ns2:expirationYear>2020</ns2:expirationYear>
+		<ns2:expirationYear>2021</ns2:expirationYear>
 	</ns2:card>
 
 	<ns2:ccAuthService run="true">