diff --git a/src/Orchard.Tests/DisplayManagement/Descriptors/ShapeTemplateBindingStrategyTests.cs b/src/Orchard.Tests/DisplayManagement/Descriptors/ShapeTemplateBindingStrategyTests.cs
index 08df97bea..7dca10877 100644
--- a/src/Orchard.Tests/DisplayManagement/Descriptors/ShapeTemplateBindingStrategyTests.cs
+++ b/src/Orchard.Tests/DisplayManagement/Descriptors/ShapeTemplateBindingStrategyTests.cs
@@ -80,6 +80,14 @@ namespace Orchard.Tests.DisplayManagement.Descriptors {
                 throw new NotImplementedException();
             }
 
+            public string GetFileHash(string virtualPath) {
+                throw new NotImplementedException();
+            }
+
+            public string GetFileHash(string virtualPath, IEnumerable<string> dependencies) {
+                throw new NotImplementedException();
+            }
+
             public bool DirectoryExists(string virtualPath) {
                 throw new NotImplementedException();
             }
diff --git a/src/Orchard.Tests/DisplayManagement/Descriptors/StylesheetBindingStrategyTests.cs b/src/Orchard.Tests/DisplayManagement/Descriptors/StylesheetBindingStrategyTests.cs
index 36b6aa069..daddb42d0 100644
--- a/src/Orchard.Tests/DisplayManagement/Descriptors/StylesheetBindingStrategyTests.cs
+++ b/src/Orchard.Tests/DisplayManagement/Descriptors/StylesheetBindingStrategyTests.cs
@@ -78,6 +78,14 @@ namespace Orchard.Tests.DisplayManagement.Descriptors {
                 throw new NotImplementedException();
             }
 
+            public string GetFileHash(string virtualPath) {
+                throw new NotImplementedException();
+            }
+
+            public string GetFileHash(string virtualPath, IEnumerable<string> dependencies) {
+                throw new NotImplementedException();
+            }
+
             public bool DirectoryExists(string virtualPath) {
                 throw new NotImplementedException();
             }
diff --git a/src/Orchard.Tests/Stubs/StubVirtualPathProvider.cs b/src/Orchard.Tests/Stubs/StubVirtualPathProvider.cs
index fb8fcbfc0..d01209e7f 100644
--- a/src/Orchard.Tests/Stubs/StubVirtualPathProvider.cs
+++ b/src/Orchard.Tests/Stubs/StubVirtualPathProvider.cs
@@ -56,6 +56,14 @@ namespace Orchard.Tests.Stubs {
             return _fileSystem.GetFileEntry(ToFileSystemPath(virtualPath)).LastWriteTimeUtc;
         }
 
+        public string GetFileHash(string virtualPath) {
+            throw new NotImplementedException();
+        }
+
+        public string GetFileHash(string virtualPath, IEnumerable<string> dependencies) {
+            throw new NotImplementedException();
+        }
+
         public bool DirectoryExists(string virtualPath) {
             return _fileSystem.GetDirectoryEntry(ToFileSystemPath(virtualPath)) != null;
         }
diff --git a/src/Orchard/FileSystems/VirtualPath/DefaultVirtualPathProvider.cs b/src/Orchard/FileSystems/VirtualPath/DefaultVirtualPathProvider.cs
index 6b488be7d..2e0ed315d 100644
--- a/src/Orchard/FileSystems/VirtualPath/DefaultVirtualPathProvider.cs
+++ b/src/Orchard/FileSystems/VirtualPath/DefaultVirtualPathProvider.cs
@@ -119,6 +119,14 @@ namespace Orchard.FileSystems.VirtualPath {
             return File.GetLastWriteTimeUtc(MapPath(virtualPath));
         }
 
+        public string GetFileHash(string virtualPath) {
+            return GetFileHash(virtualPath, new[] {virtualPath});
+        }
+
+        public string GetFileHash(string virtualPath, IEnumerable<string> dependencies) {
+            return HostingEnvironment.VirtualPathProvider.GetFileHash(virtualPath, dependencies);
+        }
+
         public virtual string MapPath(string virtualPath) {
             return HostingEnvironment.MapPath(virtualPath);
         }
diff --git a/src/Orchard/FileSystems/VirtualPath/IVirtualPathProvider.cs b/src/Orchard/FileSystems/VirtualPath/IVirtualPathProvider.cs
index 2459c92b6..e507f0663 100644
--- a/src/Orchard/FileSystems/VirtualPath/IVirtualPathProvider.cs
+++ b/src/Orchard/FileSystems/VirtualPath/IVirtualPathProvider.cs
@@ -15,6 +15,8 @@ namespace Orchard.FileSystems.VirtualPath {
         StreamWriter CreateText(string virtualPath);
         Stream CreateFile(string virtualPath);
         DateTime GetFileLastWriteTimeUtc(string virtualPath);
+        string GetFileHash(string virtualPath);
+        string GetFileHash(string virtualPath, IEnumerable<string> dependencies);
 
         bool DirectoryExists(string virtualPath);
         void CreateDirectory(string virtualPath);