diff --git a/.github/scripts/download-bundled/xsse.sh b/.github/scripts/download-bundled/xsse.sh
new file mode 100755
index 000000000000..1e2c94d9366f
--- /dev/null
+++ b/.github/scripts/download-bundled/xsse.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+set -ex
+cd "$(dirname "$0")/../../.."
+
+tmp_dir=/tmp/php-src-download-bundled/xsse
+rm -rf "$tmp_dir"
+
+revision=refs/tags/xsse-1.0.0
+
+git clone --depth 1 --revision="$revision" https://github.com/SakiTakamachi/xsse.git "$tmp_dir"
+
+cp -f "$tmp_dir"/src/xsse.h Zend/zend_simd.h
diff --git a/.github/workflows/verify-bundled-files.yml b/.github/workflows/verify-bundled-files.yml
index f36317473110..0eaf19bb9f51 100644
--- a/.github/workflows/verify-bundled-files.yml
+++ b/.github/workflows/verify-bundled-files.yml
@@ -5,6 +5,7 @@ on:
     paths: &paths
       - '.github/scripts/download-bundled/**'
       - 'Zend/asm/**'
+      - 'Zend/zend_simd.h'
       - 'ext/opcache/jit/ir/**'
       - 'ext/pcre/pcre2lib/**'
       - 'ext/uri/uriparser/**'
@@ -35,6 +36,9 @@ jobs:
             'boost-context':
               - '.github/scripts/download-bundled/boost-context.*'
               - 'Zend/asm/**'
+            xsse:
+              - '.github/scripts/download-bundled/xsse.*'
+              - 'Zend/zend_simd.h'
             'jit-ir':
               - '.github/scripts/download-bundled/jit-ir.*'
               - 'ext/opcache/jit/ir/**'
@@ -54,6 +58,15 @@ jobs:
           echo "::group::Verify files"
           .github/scripts/test-directory-unchanged.sh Zend/asm
           echo "::endgroup::"
+      - name: XSSE
+        if: ${{ !cancelled() && (steps.changes.outputs.xsse == 'true' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') }}
+        run: |
+          echo "::group::Download"
+          .github/scripts/download-bundled/xsse.sh
+          echo "::endgroup::"
+          echo "::group::Verify files"
+          .github/scripts/test-directory-unchanged.sh 'Zend/zend_simd.h'
+          echo "::endgroup::"
       - name: 'JIT IR'
         if: ${{ !cancelled() && (steps.changes.outputs.jit-ir == 'true' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') }}
         run: |