diff --git a/actions/setup/js/firewall_blocked_domains.cjs b/actions/setup/js/firewall_blocked_domains.cjs
index 9de978474bd..8f6397ffa02 100644
--- a/actions/setup/js/firewall_blocked_domains.cjs
+++ b/actions/setup/js/firewall_blocked_domains.cjs
@@ -197,7 +197,7 @@ function generateBlockedDomainsSection(blockedDomains) {
 
   let section = "\n\n> [!WARNING]\n";
   section += `> <details>\n`;
-  section += `> <summary>**⚠️ Firewall blocked ${domainCount} ${domainWord}**</summary>\n`;
+  section += `> <summary><strong>⚠️ Firewall blocked ${domainCount} ${domainWord}</strong></summary>\n`;
   section += `>\n`;
   section += `> The following ${domainWord} ${domainCount === 1 ? "was" : "were"} blocked by the firewall during workflow execution:\n`;
   section += `>\n`;
diff --git a/actions/setup/js/firewall_blocked_domains.test.cjs b/actions/setup/js/firewall_blocked_domains.test.cjs
index 6da6aeba507..5fd0009869b 100644
--- a/actions/setup/js/firewall_blocked_domains.test.cjs
+++ b/actions/setup/js/firewall_blocked_domains.test.cjs
@@ -311,7 +311,7 @@ describe("firewall_blocked_domains.cjs", () => {
       expect(result).toContain("> [!WARNING]");
       expect(result).toContain("> <details>");
       expect(result).toContain("> </details>");
-      expect(result).toContain("> <summary>**⚠️ Firewall blocked 1 domain**</summary>");
+      expect(result).toContain("> <summary><strong>⚠️ Firewall blocked 1 domain</strong></summary>");
       expect(result).toContain("> - `blocked.example.com`");
       expect(result).toContain("> The following domain was blocked by the firewall during workflow execution:");
       expect(result).toContain('> ```yaml\n> network:\n>   allowed:\n>     - defaults\n>     - "blocked.example.com"\n> ```');
@@ -325,7 +325,7 @@ describe("firewall_blocked_domains.cjs", () => {
       expect(result).toContain("> [!WARNING]");
       expect(result).toContain("> <details>");
       expect(result).toContain("> </details>");
-      expect(result).toContain("> <summary>**⚠️ Firewall blocked 3 domains**</summary>");
+      expect(result).toContain("> <summary><strong>⚠️ Firewall blocked 3 domains</strong></summary>");
       expect(result).toContain("> - `alpha.example.com`");
       expect(result).toContain("> - `beta.example.com`");
       expect(result).toContain("> - `gamma.example.com`");