diff --git a/eng/Baseline.Designer.props b/eng/Baseline.Designer.props
index 1622fa7041..45e64d60af 100644
--- a/eng/Baseline.Designer.props
+++ b/eng/Baseline.Designer.props
@@ -2,7 +2,7 @@
 <Project>
   <PropertyGroup>
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
-    <AspNetCoreBaselineVersion>2.1.19</AspNetCoreBaselineVersion>
+    <AspNetCoreBaselineVersion>2.1.18</AspNetCoreBaselineVersion>
   </PropertyGroup>
   <!-- Package: dotnet-dev-certs-->
   <PropertyGroup Condition=" '$(PackageId)' == 'dotnet-dev-certs' ">
diff --git a/eng/Baseline.xml b/eng/Baseline.xml
index 7497e78a7b..8344a8e586 100644
--- a/eng/Baseline.xml
+++ b/eng/Baseline.xml
@@ -4,7 +4,7 @@ This file contains a list of all the packages and their versions which were rele
 build of ASP.NET Core 2.1.x. Update this list when preparing for a new patch.
 
 -->
-<Baseline Version="2.1.19">
+<Baseline Version="2.1.18">
   <Package Id="dotnet-dev-certs" Version="2.1.1" />
   <Package Id="dotnet-sql-cache" Version="2.1.1" />
   <Package Id="dotnet-user-secrets" Version="2.1.1" />
diff --git a/eng/PatchConfig.props b/eng/PatchConfig.props
index 0fa48bac75..45de9044c3 100644
--- a/eng/PatchConfig.props
+++ b/eng/PatchConfig.props
@@ -56,12 +56,16 @@ Later on, this will be checked using this condition:
       Microsoft.AspNetCore.Mvc.Core;
     </PackagesInPatch>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(VersionPrefix)' == '2.1.17' ">
+    <PackagesInPatch>
+    </PackagesInPatch>
+  </PropertyGroup>
   <PropertyGroup Condition=" '$(VersionPrefix)' == '2.1.18' ">
     <PackagesInPatch>
       Microsoft.AspNetCore.Mvc.Formatters.Json;
     </PackagesInPatch>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(VersionPrefix)' == '2.1.20' ">
+  <PropertyGroup Condition=" '$(VersionPrefix)' == '2.1.19' ">
     <PackagesInPatch>
     </PackagesInPatch>
   </PropertyGroup>
diff --git a/src/PackageArchive/Archive.CiServer.Patch.Compat/ArchiveBaseline.2.1.19.txt b/src/PackageArchive/Archive.CiServer.Patch.Compat/ArchiveBaseline.2.1.19.txt
deleted file mode 100644
index 8b13789179..0000000000
--- a/src/PackageArchive/Archive.CiServer.Patch.Compat/ArchiveBaseline.2.1.19.txt
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/src/PackageArchive/Archive.CiServer.Patch/ArchiveBaseline.2.1.19.txt b/src/PackageArchive/Archive.CiServer.Patch/ArchiveBaseline.2.1.19.txt
deleted file mode 100644
index 8b13789179..0000000000
--- a/src/PackageArchive/Archive.CiServer.Patch/ArchiveBaseline.2.1.19.txt
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/version.props b/version.props
index 8a787e0583..061d552d88 100644
--- a/version.props
+++ b/version.props
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <AspNetCoreMajorVersion>2</AspNetCoreMajorVersion>
     <AspNetCoreMinorVersion>1</AspNetCoreMinorVersion>
-    <AspNetCorePatchVersion>20</AspNetCorePatchVersion>
+    <AspNetCorePatchVersion>19</AspNetCorePatchVersion>
     <PreReleaseLabel>servicing</PreReleaseLabel>
     <PreReleaseBrandingLabel>Servicing</PreReleaseBrandingLabel>
     <BuildNumber Condition="'$(BuildNumber)' == '' OR '$(UsingLocalBuildNumber)' == 'true'">t000</BuildNumber>