diff --git a/.github/workflows/release_nightly.yml b/.github/workflows/release_nightly.yml
index b8c9d34fc8c5..9cface9a7395 100644
--- a/.github/workflows/release_nightly.yml
+++ b/.github/workflows/release_nightly.yml
@@ -312,7 +312,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
   build-web:
-    name: Build web${{ matrix.demo && ' demo' || '' }}
+    name: Build web${{ matrix.demo && ' demo and selfhosted' || ' extensions' }}
     needs: create-nightly-release
     if: needs.create-nightly-release.outputs.is_active == 'true'
     runs-on: ubuntu-24.04
@@ -381,9 +381,10 @@ jobs:
           CARGO_FEATURES: jpegxr${{ matrix.demo && ',webgpu' || '' }}
           FIREFOX_EXTENSION_ID: ${{ secrets.FIREFOX_EXTENSION_ID }} # Needed to inject into manifest.json
           WASM_SOURCE: cargo_and_store
+          BUILD_COMMAND: ${{ matrix.demo && 'npm run build:dual-wasm-repro' || 'npm run build:repro' }}
         working-directory: web
         shell: bash -l {0}
-        run: npm run build:repro
+        run: $BUILD_COMMAND
 
       - name: Produce reproducible source archive
         if: ${{ !matrix.demo }}
@@ -407,7 +408,7 @@ jobs:
         run: npm run docs
 
       - name: Publish npm package
-        if: ${{ !matrix.demo }}
+        if: matrix.demo
         # npm scoped packages are private by default, explicitly make public
         run: npm publish --access public --provenance
         continue-on-error: true
@@ -416,12 +417,12 @@ jobs:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
 
       - name: Package selfhosted
-        if: ${{ !matrix.demo }}
+        if: matrix.demo
         run: zip -r "${{ needs.create-nightly-release.outputs.package_prefix }}-web-selfhosted.zip" .
         working-directory: web/packages/selfhosted/dist
 
       - name: Upload selfhosted
-        if: ${{ !matrix.demo }}
+        if: matrix.demo
         run: |
           tag_name="${{ needs.create-nightly-release.outputs.tag_name }}"
           package_file="${{ needs.create-nightly-release.outputs.package_prefix }}-web-selfhosted.zip"
diff --git a/web/README.md b/web/README.md
index 02bbca1026bf..ef88c8296902 100644
--- a/web/README.md
+++ b/web/README.md
@@ -105,7 +105,8 @@ In this project, you may run the following commands to build all packages:
     -   You may also use `npm run build:debug` to disable Webpack optimizations and activate the (extremely verbose) ActionScript debugging output.
     -   There is `npm run build:dual-wasm` as well, to build a second WebAssembly module that disables all supported WebAssembly extensions,
         potentially resulting in support for more browsers, at the expense of longer build time.
-    -   `npm run build:repro` enables reproducible builds. Note that this also requires a `version_seal.json`, which is not provided in the normal Git repository - only specially-marked reproducible source archives. Running this without a version seal will generate one based on the current state of your environment.
+    -   `npm run build:repro` enables reproducible builds with the default WASM module. Note that this also requires a `version_seal.json`, which is not provided in the normal Git repository - only specially-marked reproducible source archives. Running this without a version seal will generate one based on the current state of your environment.
+    -   `npm run build:dual-wasm-repro` enables reproducible builds with both WASM modules. Note that this also requires a `version_seal.json`, which is not provided in the normal Git repository - only specially-marked reproducible source archives. Running this without a version seal will generate one based on the current state of your environment.
     -   You will also need to run `rustup component add rust-src` with either of the previous two commands since we rebuild std for the vanilla WASM module.
 
 From here, you may follow the instructions to [use Ruffle on your website](packages/selfhosted/README.md),
diff --git a/web/package.json b/web/package.json
index 2d511a1a94b6..faf10dc23c3f 100644
--- a/web/package.json
+++ b/web/package.json
@@ -45,7 +45,8 @@
         "build": "npm run build --workspace=ruffle-core && npm run build --workspace=ruffle-demo --workspace=ruffle-extension --workspace=ruffle-selfhosted",
         "build:debug": "cross-env NODE_ENV=development CARGO_FEATURES=avm_debug npm run build",
         "build:dual-wasm": "cross-env BUILD_WASM_MVP=true npm run build",
-        "build:repro": "cross-env BUILD_WASM_MVP=true ENABLE_VERSION_SEAL=true npm run build",
+        "build:repro": "cross-env ENABLE_VERSION_SEAL=true npm run build",
+        "build:dual-wasm-repro": "cross-env BUILD_WASM_MVP=true ENABLE_VERSION_SEAL=true npm run build",
         "demo": "npm run preview --workspace ruffle-demo",
         "test": "npm test --workspaces --if-present",
         "wdio": "npm run wdio --workspaces --if-present --",