diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b2f17d597a..3cb28d90bf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,6 +11,7 @@ on:
       - '.github/workflows/ci_cmake.yml'
       - '.github/workflows/ci_msw.yml'
       - '.github/workflows/ci_msw_cross.yml'
+      - '.github/workflows/docs_update.yml'
       - 'build/tools/appveyor*.bat'
       - 'distrib/**'
       - 'docs/**'
@@ -31,6 +32,7 @@ on:
       - '.github/workflows/ci_cmake.yml'
       - '.github/workflows/ci_msw.yml'
       - '.github/workflows/ci_msw_cross.yml'
+      - '.github/workflows/docs_update.yml'
       - 'build/tools/appveyor*.bat'
       - 'distrib/**'
       - 'docs/**'
diff --git a/.github/workflows/ci_cmake.yml b/.github/workflows/ci_cmake.yml
index af5ac12cb0..4d850954aa 100644
--- a/.github/workflows/ci_cmake.yml
+++ b/.github/workflows/ci_cmake.yml
@@ -11,6 +11,7 @@ on:
       - '.github/workflows/ci_mac.yml'
       - '.github/workflows/ci_msw.yml'
       - '.github/workflows/ci_msw_cross.yml'
+      - '.github/workflows/docs_update.yml'
       - 'build/tools/appveyor*.bat'
       - 'distrib/**'
       - 'docs/**'
@@ -31,6 +32,7 @@ on:
       - '.github/workflows/ci_mac.yml'
       - '.github/workflows/ci_msw.yml'
       - '.github/workflows/ci_msw_cross.yml'
+      - '.github/workflows/docs_update.yml'
       - 'build/tools/appveyor*.bat'
       - 'distrib/**'
       - 'docs/**'
diff --git a/.github/workflows/ci_mac.yml b/.github/workflows/ci_mac.yml
index 6fa6377e3e..282567d338 100644
--- a/.github/workflows/ci_mac.yml
+++ b/.github/workflows/ci_mac.yml
@@ -10,6 +10,7 @@ on:
     - '.github/workflows/ci_cmake.yml'
     - '.github/workflows/ci_msw.yml'
     - '.github/workflows/ci_msw_cross.yml'
+    - '.github/workflows/docs_update.yml'
     - 'build/tools/appveyor*.bat'
     - 'distrib/**'
     - 'docs/**'
@@ -39,6 +40,7 @@ on:
     - '.github/workflows/ci_cmake.yml'
     - '.github/workflows/ci_msw.yml'
     - '.github/workflows/ci_msw_cross.yml'
+    - '.github/workflows/docs_update.yml'
     - 'build/tools/appveyor*.bat'
     - 'distrib/**'
     - 'docs/**'
diff --git a/.github/workflows/ci_msw.yml b/.github/workflows/ci_msw.yml
index 6c8f9a526b..ae9ed4dbf4 100644
--- a/.github/workflows/ci_msw.yml
+++ b/.github/workflows/ci_msw.yml
@@ -11,6 +11,7 @@ on:
       - '.github/workflows/ci_cmake.yml'
       - '.github/workflows/ci_mac.yml'
       - '.github/workflows/ci_msw_cross.yml'
+      - '.github/workflows/docs_update.yml'
       - 'build/tools/appveyor*.bat'
       - 'distrib/**'
       - 'docs/**'
@@ -31,6 +32,7 @@ on:
       - '.github/workflows/ci_cmake.yml'
       - '.github/workflows/ci_mac.yml'
       - '.github/workflows/ci_msw_cross.yml'
+      - '.github/workflows/docs_update.yml'
       - 'build/tools/appveyor*.bat'
       - 'distrib/**'
       - 'docs/**'
diff --git a/.github/workflows/ci_msw_cross.yml b/.github/workflows/ci_msw_cross.yml
index 674ab29684..05d3193f9a 100644
--- a/.github/workflows/ci_msw_cross.yml
+++ b/.github/workflows/ci_msw_cross.yml
@@ -11,6 +11,7 @@ on:
       - '.github/workflows/ci_cmake.yml'
       - '.github/workflows/ci_mac.yml'
       - '.github/workflows/ci_msw.yml'
+      - '.github/workflows/docs_update.yml'
       - 'build/tools/appveyor*.bat'
       - 'distrib/**'
       - 'docs/**'
@@ -33,6 +34,7 @@ on:
       - '.github/workflows/ci_cmake.yml'
       - '.github/workflows/ci_mac.yml'
       - '.github/workflows/ci_msw.yml'
+      - '.github/workflows/docs_update.yml'
       - 'build/tools/appveyor*.bat'
       - 'distrib/**'
       - 'docs/**'
diff --git a/.github/workflows/docs_update.yml b/.github/workflows/docs_update.yml
new file mode 100644
index 0000000000..e62fd66c10
--- /dev/null
+++ b/.github/workflows/docs_update.yml
@@ -0,0 +1,40 @@
+name: Update Documentation
+
+on:
+  push:
+    branches:
+      - master
+  workflow_dispatch:
+
+
+jobs:
+  update:
+    runs-on: ubuntu-20.04
+    name: Update Online Documentation
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install doxygen
+        run: |
+          sudo apt-get -q -o=Dpkg::Use-Pty=0 -y install doxygen graphviz
+
+      - name: Generate documentation
+        working-directory: docs/doxygen
+        run: |
+          ./regen.sh php
+
+      - name: Upload
+        if: github.repository_owner == 'wxWidgets'
+        working-directory: docs/doxygen
+        env:
+          DOCS_WEBSITE_KEY: ${{secrets.DOCS_WEBSITE_KEY}}
+          DOCS_WEBSITE_SSH_CONFIG: ${{secrets.DOCS_WEBSITE_SSH_CONFIG}}
+        run: |
+          mkdir "$HOME/.ssh"
+          echo "$DOCS_WEBSITE_KEY" > "$HOME/.ssh/docs_website_key"
+          chmod 600 "$HOME/.ssh/docs_website_key"
+          echo "$DOCS_WEBSITE_SSH_CONFIG" > "$HOME/.ssh/config"
+          rsync --checksum --compress --delete --recursive --verbose
+            out/html/ wxdocs:public_html/latest/