diff --git a/.drone.jsonnet b/.drone.jsonnet
index 6ef7622..e7a8b25 100644
--- a/.drone.jsonnet
+++ b/.drone.jsonnet
@@ -12,7 +12,6 @@ local images = [
 ];
 
 local tags = [
-  '1803',
   '1809',
   '1903',
   '1909',
diff --git a/.drone.yml b/.drone.yml
index 873ba52..4134ed0 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -1,189 +1,3 @@
----
-kind: pipeline
-name: ServerCore 1803 Images
-
-platform:
-  os: windows
-  arch: amd64
-  version: 1803
-
-steps:
-- name: build-base
-  pull: always
-  image: plugins/docker
-  settings:
-    auto_tag: true
-    auto_tag_suffix: 1803
-    context: base
-    daemon_off: true
-    dockerfile: base/Dockerfile.1803
-    password:
-      from_secret: docker_password
-    purge: false
-    repo: webkitdev/base
-    username:
-      from_secret: docker_username
-  volumes:
-  - name: docker_pipe
-    path: \\\\.\\pipe\\docker_engine
-
-- name: build-scripts
-  pull: always
-  image: plugins/docker
-  settings:
-    auto_tag: true
-    auto_tag_suffix: 1803
-    build_args:
-    - IMAGE_TAG=1803
-    context: scripts
-    daemon_off: true
-    dockerfile: scripts/Dockerfile
-    password:
-      from_secret: docker_password
-    purge: false
-    repo: webkitdev/scripts
-    username:
-      from_secret: docker_username
-  volumes:
-  - name: docker_pipe
-    path: \\\\.\\pipe\\docker_engine
-
-- name: build-scm
-  pull: always
-  image: plugins/docker
-  settings:
-    auto_tag: true
-    auto_tag_suffix: 1803
-    build_args:
-    - IMAGE_TAG=1803
-    context: scm
-    daemon_off: true
-    dockerfile: scm/Dockerfile
-    password:
-      from_secret: docker_password
-    purge: false
-    repo: webkitdev/scm
-    username:
-      from_secret: docker_username
-  volumes:
-  - name: docker_pipe
-    path: \\\\.\\pipe\\docker_engine
-
-- name: build-tools
-  pull: always
-  image: plugins/docker
-  settings:
-    auto_tag: true
-    auto_tag_suffix: 1803
-    build_args:
-    - IMAGE_TAG=1803
-    context: tools
-    daemon_off: true
-    dockerfile: tools/Dockerfile
-    password:
-      from_secret: docker_password
-    purge: false
-    repo: webkitdev/tools
-    username:
-      from_secret: docker_username
-  volumes:
-  - name: docker_pipe
-    path: \\\\.\\pipe\\docker_engine
-
-- name: build-msbuild
-  pull: always
-  image: plugins/docker
-  settings:
-    auto_tag: true
-    auto_tag_suffix: 1803
-    build_args:
-    - IMAGE_TAG=1803
-    context: msbuild
-    daemon_off: true
-    dockerfile: msbuild/Dockerfile
-    password:
-      from_secret: docker_password
-    purge: false
-    repo: webkitdev/msbuild
-    username:
-      from_secret: docker_username
-  volumes:
-  - name: docker_pipe
-    path: \\\\.\\pipe\\docker_engine
-
-- name: build-msbuild-2017
-  pull: always
-  image: plugins/docker
-  settings:
-    auto_tag: true
-    auto_tag_suffix: 1803
-    build_args:
-    - IMAGE_TAG=1803
-    context: msbuild-2017
-    daemon_off: true
-    dockerfile: msbuild-2017/Dockerfile
-    password:
-      from_secret: docker_password
-    purge: false
-    repo: webkitdev/msbuild-2017
-    username:
-      from_secret: docker_username
-  volumes:
-  - name: docker_pipe
-    path: \\\\.\\pipe\\docker_engine
-
-- name: build-buildbot
-  pull: always
-  image: plugins/docker
-  settings:
-    auto_tag: true
-    auto_tag_suffix: 1803
-    build_args:
-    - IMAGE_TAG=1803
-    context: buildbot
-    daemon_off: true
-    dockerfile: buildbot/Dockerfile
-    password:
-      from_secret: docker_password
-    purge: false
-    repo: webkitdev/buildbot
-    username:
-      from_secret: docker_username
-  volumes:
-  - name: docker_pipe
-    path: \\\\.\\pipe\\docker_engine
-
-- name: build-ews
-  pull: always
-  image: plugins/docker
-  settings:
-    auto_tag: true
-    auto_tag_suffix: 1803
-    build_args:
-    - IMAGE_TAG=1803
-    context: ews
-    daemon_off: true
-    dockerfile: ews/Dockerfile
-    password:
-      from_secret: docker_password
-    purge: false
-    repo: webkitdev/ews
-    username:
-      from_secret: docker_username
-  volumes:
-  - name: docker_pipe
-    path: \\\\.\\pipe\\docker_engine
-
-volumes:
-- name: docker_pipe
-  host:
-    path: \\\\.\\pipe\\docker_engine
-
-trigger:
-  ref:
-  - refs/heads/**
-  - refs/tags/**
-
 ---
 kind: pipeline
 name: ServerCore 1809 Images
@@ -1776,7 +1590,6 @@ trigger:
   - refs/tags/**
 
 depends_on:
-- ServerCore 1803 Images
 - ServerCore 1809 Images
 - ServerCore 1903 Images
 - ServerCore 1909 Images
diff --git a/Build-All.ps1 b/Build-All.ps1
index 2f2968b..2c637ca 100644
--- a/Build-All.ps1
+++ b/Build-All.ps1
@@ -1,6 +1,6 @@
 param(
   [Parameter(Mandatory)]
-  [ValidateSet('1803','1809','1903','1909','2004','windows-1809','windows-1903','windows-1909','windows-2004')]
+  [ValidateSet('1809','1903','1909','2004','windows-1809','windows-1903','windows-1909','windows-2004')]
   [string]$tag
 )
 
diff --git a/Publish-All.ps1 b/Publish-All.ps1
index 8e14091..436f579 100644
--- a/Publish-All.ps1
+++ b/Publish-All.ps1
@@ -1,6 +1,6 @@
 param(
   [Parameter(Mandatory)]
-  [ValidateSet('1803','1809','1903','1909','2004','windows-1809','windows-1903','windows-1909','windows-2004')]
+  [ValidateSet('1809','1903','1909','2004','windows-1809','windows-1903','windows-1909','windows-2004')]
   [string]$tag
 )
 
diff --git a/base/Dockerfile.1803 b/base/Dockerfile.1803
deleted file mode 100644
index bfcbc47..0000000
--- a/base/Dockerfile.1803
+++ /dev/null
@@ -1 +0,0 @@
-FROM mcr.microsoft.com/dotnet/framework/runtime:4.8-windowsservercore-1803@sha256:0ad6735e4c776d881ec2c48c1a61ad57f5ef3dfe3e0410c71e98c2e12942f907
diff --git a/base/Dockerfile.windows-1809 b/base/Dockerfile.windows-1809
index ed8197b..a3b85cf 100644
--- a/base/Dockerfile.windows-1809
+++ b/base/Dockerfile.windows-1809
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/windows:1809@sha256:bf5f60839adcb5cfd775243bb86069deb88083217c656c456d90fbb685369aa5
+FROM mcr.microsoft.com/windows:1809@sha256:be38cab7b685c8b4bbc39b9ba79e743e582089c187fe8b79f6d8d230d017a6fe
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
 
diff --git a/base/Dockerfile.windows-1903 b/base/Dockerfile.windows-1903
index d94517b..e3f37ae 100644
--- a/base/Dockerfile.windows-1903
+++ b/base/Dockerfile.windows-1903
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/windows:1903@sha256:9122394f5a4201eca8503f516e591899770ad0526ebacd503d92ffaf54882e38
+FROM mcr.microsoft.com/windows:1903@sha256:90cddfccd9e1bb07b25afa818da5e32ea588696c1e9306a112375cf2c51f6013
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
 
diff --git a/base/Dockerfile.windows-1909 b/base/Dockerfile.windows-1909
index abca667..6717b67 100644
--- a/base/Dockerfile.windows-1909
+++ b/base/Dockerfile.windows-1909
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/windows:1909@sha256:7d3d74b4c3426e531088fba7539907bf30f87b05be2ff7372b9fad38ff212ed8
+FROM mcr.microsoft.com/windows:1909@sha256:ff36545dfd662bac093537312f206329536e128ec6960c011008a96238706ce6
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
 
diff --git a/base/Dockerfile.windows-2004 b/base/Dockerfile.windows-2004
index d49558e..1ddfce4 100644
--- a/base/Dockerfile.windows-2004
+++ b/base/Dockerfile.windows-2004
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/windows:2004
+FROM mcr.microsoft.com/windows:2004@sha256:9969a52e217f195fe42fd798643535bd4f68e1d9dab4247496f87c8536315013
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
 
diff --git a/base/manifest.tmpl b/base/manifest.tmpl
index 233e1d2..1b6e305 100644
--- a/base/manifest.tmpl
+++ b/base/manifest.tmpl
@@ -6,12 +6,6 @@ tags:
 {{/each}}
 {{/if}}
 manifests:
-  -
-    image: webkitdev/base:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1803
-    platform:
-      architecture: amd64
-      os: windows
-      version: 1803
   -
     image: webkitdev/base:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1809
     platform:
diff --git a/buildbot/manifest.tmpl b/buildbot/manifest.tmpl
index 8705e23..30e2da5 100644
--- a/buildbot/manifest.tmpl
+++ b/buildbot/manifest.tmpl
@@ -6,12 +6,6 @@ tags:
 {{/each}}
 {{/if}}
 manifests:
-  -
-    image: webkitdev/buildbot:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1803
-    platform:
-      architecture: amd64
-      os: windows
-      version: 1803
   -
     image: webkitdev/buildbot:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1809
     platform:
diff --git a/ews-legacy/manifest.tmpl b/ews-legacy/manifest.tmpl
index 4fdc9ee..400e08b 100644
--- a/ews-legacy/manifest.tmpl
+++ b/ews-legacy/manifest.tmpl
@@ -6,12 +6,6 @@ tags:
 {{/each}}
 {{/if}}
 manifests:
-  -
-    image: webkitdev/ews-legacy:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1803
-    platform:
-      architecture: amd64
-      os: windows
-      version: 1803
   -
     image: webkitdev/ews-legacy:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1809
     platform:
diff --git a/ews/manifest.tmpl b/ews/manifest.tmpl
index a257e0d..3f7d32f 100644
--- a/ews/manifest.tmpl
+++ b/ews/manifest.tmpl
@@ -6,12 +6,6 @@ tags:
 {{/each}}
 {{/if}}
 manifests:
-  -
-    image: webkitdev/ews:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1803
-    platform:
-      architecture: amd64
-      os: windows
-      version: 1803
   -
     image: webkitdev/ews:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1809
     platform:
diff --git a/msbuild-2017/manifest.tmpl b/msbuild-2017/manifest.tmpl
index 7b0a16a..80fedd6 100644
--- a/msbuild-2017/manifest.tmpl
+++ b/msbuild-2017/manifest.tmpl
@@ -6,12 +6,6 @@ tags:
 {{/each}}
 {{/if}}
 manifests:
-  -
-    image: webkitdev/msbuild-2017:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1803
-    platform:
-      architecture: amd64
-      os: windows
-      version: 1803
   -
     image: webkitdev/msbuild-2017:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1809
     platform:
diff --git a/msbuild/manifest.tmpl b/msbuild/manifest.tmpl
index 192d02f..8350870 100644
--- a/msbuild/manifest.tmpl
+++ b/msbuild/manifest.tmpl
@@ -6,12 +6,6 @@ tags:
 {{/each}}
 {{/if}}
 manifests:
-  -
-    image: webkitdev/msbuild:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1803
-    platform:
-      architecture: amd64
-      os: windows
-      version: 1803
   -
     image: webkitdev/msbuild:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1809
     platform:
diff --git a/renovate.json b/renovate.json
index b0a6035..a00d433 100644
--- a/renovate.json
+++ b/renovate.json
@@ -4,7 +4,7 @@
   ],
   "dockerfile": {
     "fileMatch": [
-      "base/Dockerfile\\.(1803|1809|1903|1909|2004|windows-1809|windows-1903|windows-1909|windows-2004)"
+      "base/Dockerfile\\.(1809|1903|1909|2004|windows-1809|windows-1903|windows-1909|windows-2004)"
     ],
     "pinDigests": true
   },
diff --git a/scm/manifest.tmpl b/scm/manifest.tmpl
index 3b3d325..9cbd2f6 100644
--- a/scm/manifest.tmpl
+++ b/scm/manifest.tmpl
@@ -6,12 +6,6 @@ tags:
 {{/each}}
 {{/if}}
 manifests:
-  -
-    image: webkitdev/scm:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1803
-    platform:
-      architecture: amd64
-      os: windows
-      version: 1803
   -
     image: webkitdev/scm:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1809
     platform:
diff --git a/scripts/manifest.tmpl b/scripts/manifest.tmpl
index 93a4c67..10d5a6a 100644
--- a/scripts/manifest.tmpl
+++ b/scripts/manifest.tmpl
@@ -6,12 +6,6 @@ tags:
 {{/each}}
 {{/if}}
 manifests:
-  -
-    image: webkitdev/scripts:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1803
-    platform:
-      architecture: amd64
-      os: windows
-      version: 1803
   -
     image: webkitdev/scripts:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1809
     platform:
diff --git a/tools/manifest.tmpl b/tools/manifest.tmpl
index aa4b05a..cb1b06b 100644
--- a/tools/manifest.tmpl
+++ b/tools/manifest.tmpl
@@ -6,12 +6,6 @@ tags:
 {{/each}}
 {{/if}}
 manifests:
-  -
-    image: webkitdev/tools:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1803
-    platform:
-      architecture: amd64
-      os: windows
-      version: 1803
   -
     image: webkitdev/tools:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}1809
     platform: