diff --git a/src/Serilog.Sinks.File/RollingInterval.cs b/src/Serilog.Sinks.File/RollingInterval.cs
index 9fac848..7b013d9 100644
--- a/src/Serilog.Sinks.File/RollingInterval.cs
+++ b/src/Serilog.Sinks.File/RollingInterval.cs
@@ -34,6 +34,11 @@ public enum RollingInterval
         /// </summary>
         Month,
 
+        /// <summary>
+        /// Roll every calendar week. Filenames will have <code>yyyyMMdd</code> appended.
+        /// </summary>
+        Week,
+
         /// <summary>
         /// Roll every day. Filenames will have <code>yyyyMMdd</code> appended.
         /// </summary>
diff --git a/src/Serilog.Sinks.File/Serilog.Sinks.File.csproj b/src/Serilog.Sinks.File/Serilog.Sinks.File.csproj
index 7b81e3f..6789a87 100644
--- a/src/Serilog.Sinks.File/Serilog.Sinks.File.csproj
+++ b/src/Serilog.Sinks.File/Serilog.Sinks.File.csproj
@@ -11,9 +11,9 @@
     <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
     <PackageTags>serilog;file</PackageTags>
     <PackageIcon>images\icon.png</PackageIcon>
-    <PackageIconUrl>https://serilog.net/images/serilog-sink-nuget.png</PackageIconUrl>
     <PackageProjectUrl>http://serilog.net</PackageProjectUrl>
     <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
+    <PackageLicense>http://www.apache.org/licenses/LICENSE-2.0</PackageLicense>
     <RepositoryUrl>https://github.com/serilog/serilog-sinks-file</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
     <GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>
diff --git a/src/Serilog.Sinks.File/Sinks/File/RollingIntervalExtensions.cs b/src/Serilog.Sinks.File/Sinks/File/RollingIntervalExtensions.cs
index 2c9e2fd..101a0ef 100644
--- a/src/Serilog.Sinks.File/Sinks/File/RollingIntervalExtensions.cs
+++ b/src/Serilog.Sinks.File/Sinks/File/RollingIntervalExtensions.cs
@@ -28,6 +28,8 @@ public static string GetFormat(this RollingInterval interval)
                     return "yyyy";
                 case RollingInterval.Month:
                     return "yyyyMM";
+                case RollingInterval.Week:
+                    return "yyyyMMdd";
                 case RollingInterval.Day:
                     return "yyyyMMdd";
                 case RollingInterval.Hour:
@@ -49,6 +51,8 @@ public static string GetFormat(this RollingInterval interval)
                     return new DateTime(instant.Year, 1, 1, 0, 0, 0, instant.Kind);
                 case RollingInterval.Month:
                     return new DateTime(instant.Year, instant.Month, 1, 0, 0, 0, instant.Kind);
+                case RollingInterval.Week:
+                    return new DateTime(instant.Year, instant.Month, instant.Day, 0, 0, 0, instant.Kind);
                 case RollingInterval.Day:
                     return new DateTime(instant.Year, instant.Month, instant.Day, 0, 0, 0, instant.Kind);
                 case RollingInterval.Hour:
@@ -72,6 +76,8 @@ public static string GetFormat(this RollingInterval interval)
                     return current.Value.AddYears(1);
                 case RollingInterval.Month:
                     return current.Value.AddMonths(1);
+                case RollingInterval.Week:
+                    return current.Value.AddDays(7);
                 case RollingInterval.Day:
                     return current.Value.AddDays(1);
                 case RollingInterval.Hour:
diff --git a/test/Serilog.Sinks.File.Tests/RollingIntervalExtensionsTests.cs b/test/Serilog.Sinks.File.Tests/RollingIntervalExtensionsTests.cs
index 2d97d1b..8cc0914 100644
--- a/test/Serilog.Sinks.File.Tests/RollingIntervalExtensionsTests.cs
+++ b/test/Serilog.Sinks.File.Tests/RollingIntervalExtensionsTests.cs
@@ -12,6 +12,8 @@ public class RollingIntervalExtensionsTests
             new object[]{ RollingInterval.Year,     new DateTime(2018, 06, 01),           new DateTime(2018, 01, 01), new DateTime(2019, 01, 01) },
             new object[]{ RollingInterval.Month,    new DateTime(2018, 01, 01),           new DateTime(2018, 01, 01), new DateTime(2018, 02, 01) },
             new object[]{ RollingInterval.Month,    new DateTime(2018, 01, 14),           new DateTime(2018, 01, 01), new DateTime(2018, 02, 01) },
+            new object[]{ RollingInterval.Week,     new DateTime(2018, 01, 01),           new DateTime(2018, 01, 01), new DateTime(2018, 01, 08) },
+            new object[]{ RollingInterval.Week,     new DateTime(2018, 01, 01, 12, 0, 0), new DateTime(2018, 01, 01), new DateTime(2018, 01, 08) },
             new object[]{ RollingInterval.Day,      new DateTime(2018, 01, 01),           new DateTime(2018, 01, 01), new DateTime(2018, 01, 02) },
             new object[]{ RollingInterval.Day,      new DateTime(2018, 01, 01, 12, 0, 0), new DateTime(2018, 01, 01), new DateTime(2018, 01, 02) },
             new object[]{ RollingInterval.Hour,     new DateTime(2018, 01, 01, 0, 0, 0),  new DateTime(2018, 01, 01), new DateTime(2018, 01, 01, 1, 0, 0) },
diff --git a/test/Serilog.Sinks.File.Tests/Serilog.Sinks.File.Tests.csproj b/test/Serilog.Sinks.File.Tests/Serilog.Sinks.File.Tests.csproj
index fcf2880..8c99f35 100644
--- a/test/Serilog.Sinks.File.Tests/Serilog.Sinks.File.Tests.csproj
+++ b/test/Serilog.Sinks.File.Tests/Serilog.Sinks.File.Tests.csproj
@@ -18,6 +18,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="System.Runtime" Version="4.3.0" />
+    <PackageReference Include="xunit.extensibility.core" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
   </ItemGroup>