diff --git a/build.gradle b/build.gradle
index d9b9ad826f..c2ce05c1aa 100644
--- a/build.gradle
+++ b/build.gradle
@@ -213,7 +213,7 @@ subprojects {
                 links 'https://commons.apache.org/proper/commons-compress/apidocs/'
                 use = true
                 splitIndex = true
-                source = "1.11"
+                source = "11"
             }
         }
     }
diff --git a/poi-ooxml/build.gradle b/poi-ooxml/build.gradle
index 88d4674331..43958237e6 100644
--- a/poi-ooxml/build.gradle
+++ b/poi-ooxml/build.gradle
@@ -219,7 +219,7 @@ javadoc {
             if (jdkVersion >= 23) links 'https://docs.oracle.com/en/java/javase/23/docs/api/' else links 'https://docs.oracle.com/javase/8/docs/api/'
             use = true
             splitIndex = true
-            source = "1.11"
+            source = "11"
             classpath += configurations.javadocs.files
         }
     }