diff --git a/spring-shell-docs/src/assembly/docs-zip.xml b/spring-shell-docs/src/assembly/docs-zip.xml
index a1c75122..9666020a 100644
--- a/spring-shell-docs/src/assembly/docs-zip.xml
+++ b/spring-shell-docs/src/assembly/docs-zip.xml
@@ -1,6 +1,6 @@
 <assembly xmlns="http://maven.apache.org/ASSEMBLY/2.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-          xsi:schemaLocation="http://maven.apache.org/ASSEMBLY/2.0.0 http://maven.apache.org/xsd/assembly-2.0.0.xsd">
+          xsi:schemaLocation="http://maven.apache.org/ASSEMBLY/2.0.0 https://maven.apache.org/xsd/assembly-2.0.0.xsd">
     <id>docs</id>
     <formats>
         <format>zip</format>