diff --git a/.github/scribe-sign-exe-dll.yml b/.github/scribe-sign-exe-dll.yml
new file mode 100644
index 00000000..31def5b0
--- /dev/null
+++ b/.github/scribe-sign-exe-dll.yml
@@ -0,0 +1,13 @@
+stub: ykman
+releaseType: public
+jobs:
+  - name: sign-source
+    platform: linux
+    steps:
+      - id: 1
+        action: windows
+        description: YubiKey Manager
+        files:
+          - ykman-builds-windows/ykman/ykman.exe
+          - ykman-builds-windows/ykman/_internal/pywin32_system32/pythoncom314.dll
+          - ykman-builds-windows/ykman/_internal/pywin32_system32/pywintypes314.dll
\ No newline at end of file
diff --git a/.github/scribe-sign-msi.yml b/.github/scribe-sign-msi.yml
new file mode 100644
index 00000000..7909ed50
--- /dev/null
+++ b/.github/scribe-sign-msi.yml
@@ -0,0 +1,11 @@
+stub: ykman
+releaseType: public
+jobs:
+  - name: sign-source
+    platform: linux
+    steps:
+      - id: 1
+        action: windows
+        description: YubiKey Manager
+        files:
+          - ykman-builds-windows/ykman-installer-windows/ykman.msi
\ No newline at end of file
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index a547fc01..62f7e679 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -73,3 +73,163 @@ jobs:
         with:
           name: ykman-builds-windows
           path: dist
+
+  sign-exe-dll:
+    if: startsWith(github.ref, 'refs/tags/')
+    needs: [build]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check tag format
+        run: |
+          if [[ "${GITHUB_REF}" =~ ^refs/tags/[0-9]+\.[0-9]+\.[0-9]+-rc\.[0-9]+$ ]]; then
+            echo "Tag matches format"
+          else
+            echo "Invalid tag format"
+            exit 1
+          fi
+
+      - uses: actions/checkout@v6
+
+      - name: download artifacts
+        uses: actions/download-artifact@v5
+        with:
+          path: ykman-builds-windows
+
+      - name: docker login
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ci@yubico.com
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: write service account credentials
+        env:
+          GAC: ${{ secrets.SCRIBE_SA }}
+        run: |
+          echo "${GAC}" > scribe_sa.json
+          echo "GOOGLE_APPLICATION_CREDENTIALS=/scribe/scribe_sa.json" >> $GITHUB_ENV
+
+      - name: run scribe sign exe and dlls
+        run: >
+          docker run
+          --user $(id -u):$(id -g)
+          --volume $(pwd):/scribe
+          --env-file <(env)
+          ghcr.io/yubico/scribe-ci:v1
+          --project-id scribe-prod-987134
+          --bucket scribe-u-pub-ykman-fqj0hy
+          --config /scribe/.github/scribe-sign-exe-dll.yml
+          submit .
+          --synchronous
+          --download-artifacts
+
+      - name: unpack signed exe and dlls
+        run: |
+          mkdir -p signed
+          mv scribe-download/*/sign-source/1.zip signed/
+          rm -rf scribe-download
+          cd signed
+          unzip -j 1.zip || true
+          rm 1.zip
+          cd ..
+          cp signed/ykman.exe ykman-builds-windows/ykman/ykman.exe
+          cp signed/pythoncom314.dll ykman-builds-windows/ykman/_internal/pywin32_system32/pythoncom314.dll
+          cp signed/pywintypes314.dll ykman-builds-windows/ykman/_internal/pywin32_system32/pywintypes314.dll
+
+      - name: upload signed artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: signed-files
+          path: ykman-builds-windows
+
+  build-msi:
+    needs: [sign-exe-dll]
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: download artifacts
+        uses: actions/download-artifact@v5
+        with:
+          path: ykman-builds-windows
+
+      - name: Build installer
+        working-directory: .\ykman-builds-windows\signed-files\
+        run: .\scripts\make_msi.ps1
+
+      - name: Upload installer
+        uses: actions/upload-artifact@v4
+        with:
+          name: ykman-installer-windows
+          path: .\ykman-builds-windows\signed-files\
+
+  sign-msi:
+    needs: [build-msi]
+    runs-on: ubuntu-latest
+    steps:
+    - name: checkout repo
+      uses: actions/checkout@v6
+
+    - name: download artifacts
+      uses: actions/download-artifact@v5
+      with:
+        path: ykman-builds-windows
+
+    - name: docker login
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ci@yubico.com
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: write service account credentials
+      env:
+        GAC: ${{ secrets.SCRIBE_SA }}
+      run: |
+        echo "${GAC}" > scribe_sa.json
+        echo "GOOGLE_APPLICATION_CREDENTIALS=/scribe/scribe_sa.json" >> $GITHUB_ENV
+
+    - name: run scribe sign msi
+      run: >
+        docker run
+        --user $(id -u):$(id -g)
+        --volume $(pwd):/scribe
+        --env-file <(env)
+        ghcr.io/yubico/scribe-ci:v1
+        --project-id scribe-prod-987134
+        --bucket scribe-u-pub-ykman-fqj0hy
+        --config /scribe/.github/scribe-sign-msi.yml
+        submit .
+        --synchronous
+        --download-artifacts
+
+    - name: unpack signed msi
+      run: |
+        mkdir -p signed
+        mv scribe-download/*/sign-source/1.zip signed/
+        rm -rf scribe-download
+        cd signed
+        unzip -j 1.zip || true
+        rm 1.zip
+        cd ..
+        cp signed/ykman.msi ykman-builds-windows/ykman-installer-windows/ykman.msi
+
+    - name: upload signed artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: signed-files-and-msi
+        path: ykman-builds-windows/ykman-installer-windows
+
+  verify-signatures:
+    needs: [sign-msi]
+    runs-on: windows-latest
+    steps:
+      - name: Download artifacts
+        uses: actions/download-artifact@v5
+        with:
+          name: signed-files-and-msi
+          path: ykman-builds-windows/ykman-installer-windows
+
+      - name: Check for unsigned DLLs
+        working-directory: .\ykman-builds-windows\ykman-installer-windows
+        run: .\scripts\verify_dll.ps1
\ No newline at end of file
diff --git a/resources/win/verify_dll.ps1 b/resources/win/verify_dll.ps1
new file mode 100644
index 00000000..d2051684
--- /dev/null
+++ b/resources/win/verify_dll.ps1
@@ -0,0 +1,15 @@
+# Set-PSDebug -Trace 1
+
+$ErrorActionPreference = "Stop"
+
+$unsignedDlls = Get-ChildItem -Path "ykman" -Recurse -Filter *.dll | 
+  Where-Object { (Get-AuthenticodeSignature $_.FullName).Status -ne 'Valid' } | 
+  Select-Object -ExpandProperty FullName
+
+if ($unsignedDlls) {
+    Write-Host "ERROR: Found unsigned DLL(s):"
+    $unsignedDlls | ForEach-Object { Write-Host "  - $_" }
+    exit 1
+} else {
+    Write-Host "SUCCESS: All DLLs are signed."
+}
\ No newline at end of file