diff --git a/docs/angular/public/web.config b/docs/angular/public/web.config
index 5c726b77c1..a9aac0c042 100644
--- a/docs/angular/public/web.config
+++ b/docs/angular/public/web.config
@@ -778,4 +778,13 @@
             </rules>
         </rewrite>
     </system.webServer>
+    <location path="_astro">
+        <system.webServer>
+            <httpProtocol>
+                <customHeaders>
+                    <add name="Cache-Control" value="public, max-age=31536000, immutable" />
+                </customHeaders>
+            </httpProtocol>
+        </system.webServer>
+    </location>
 </configuration>
diff --git a/docs/xplat/public/web.config b/docs/xplat/public/web.config
index d2cc80a6ab..3afbcade29 100644
--- a/docs/xplat/public/web.config
+++ b/docs/xplat/public/web.config
@@ -62,4 +62,13 @@
             </rules>
         </rewrite>
     </system.webServer>
+    <location path="_astro">
+        <system.webServer>
+            <httpProtocol>
+                <customHeaders>
+                    <add name="Cache-Control" value="public, max-age=31536000, immutable" />
+                </customHeaders>
+            </httpProtocol>
+        </system.webServer>
+    </location>
 </configuration>