diff --git a/Crypto/Crypto_VS90.vcproj b/Crypto/Crypto_VS90.vcproj
index 4f8545e6d..0a76f3c16 100644
--- a/Crypto/Crypto_VS90.vcproj
+++ b/Crypto/Crypto_VS90.vcproj
@@ -653,6 +653,10 @@
 					RelativePath=".\include\Poco\Crypto\CryptoException.h"
 					>
 				</File>
+				<File
+					RelativePath=".\include\Poco\Crypto\EVPCipherImpl.h"
+					>
+				</File>
 				<File
 					RelativePath=".\include\Poco\Crypto\EVPPKey.h"
 					>
@@ -677,6 +681,10 @@
 					RelativePath=".\src\CryptoException.cpp"
 					>
 				</File>
+				<File
+					RelativePath=".\src\EVPCipherImpl.cpp"
+					>
+				</File>
 				<File
 					RelativePath=".\src\EVPPKey.cpp"
 					>
@@ -733,6 +741,10 @@
 					RelativePath=".\include\Poco\Crypto\ECKeyImpl.h"
 					>
 				</File>
+				<File
+					RelativePath=".\include\Poco\Crypto\Envelope.h"
+					>
+				</File>
 			</Filter>
 			<Filter
 				Name="Source Files"
@@ -749,6 +761,10 @@
 					RelativePath=".\src\ECKeyImpl.cpp"
 					>
 				</File>
+				<File
+					RelativePath=".\src\Envelope.cpp"
+					>
+				</File>
 			</Filter>
 		</Filter>
 		<File
diff --git a/Crypto/testsuite/TestSuite_VS90.vcproj b/Crypto/testsuite/TestSuite_VS90.vcproj
index 9804eb3f9..3d38900f3 100644
--- a/Crypto/testsuite/TestSuite_VS90.vcproj
+++ b/Crypto/testsuite/TestSuite_VS90.vcproj
@@ -582,6 +582,10 @@
 					RelativePath=".\src\PKCS12ContainerTest.h"
 					>
 				</File>
+				<File
+					RelativePath=".\src\EnvelopeTest.h"
+					>
+				</File>
 				<File
 					RelativePath=".\src\RSATest.h"
 					>
@@ -610,6 +614,10 @@
 					RelativePath=".\src\PKCS12ContainerTest.cpp"
 					>
 				</File>
+				<File
+					RelativePath=".\src\EnvelopeTest.cpp"
+					>
+				</File>
 				<File
 					RelativePath=".\src\RSATest.cpp"
 					>