diff --git a/Util/Util_x64_vs90.vcproj b/Util/Util_x64_vs90.vcproj
index 509de473d..17138de63 100644
--- a/Util/Util_x64_vs90.vcproj
+++ b/Util/Util_x64_vs90.vcproj
@@ -424,6 +424,8 @@
 					RelativePath=".\include\Poco\Util\FilesystemConfiguration.h"/>
 				<File
 					RelativePath=".\include\Poco\Util\IniFileConfiguration.h"/>
+				<File
+					RelativePath=".\include\Poco\Util\JSONConfiguration.h"/>
 				<File
 					RelativePath=".\include\Poco\Util\LayeredConfiguration.h"/>
 				<File
@@ -449,6 +451,8 @@
 					RelativePath=".\src\FilesystemConfiguration.cpp"/>
 				<File
 					RelativePath=".\src\IniFileConfiguration.cpp"/>
+				<File
+					RelativePath=".\src\JSONConfiguration.cpp"/>
 				<File
 					RelativePath=".\src\LayeredConfiguration.cpp"/>
 				<File