diff --git a/poi-scratchpad/build.gradle b/poi-scratchpad/build.gradle
index 4360c505e1..94ca0350c8 100644
--- a/poi-scratchpad/build.gradle
+++ b/poi-scratchpad/build.gradle
@@ -45,6 +45,7 @@ dependencies {
     testImplementation project(path: ':poi', configuration: 'tests')
     testImplementation "org.junit.jupiter:junit-jupiter-api:${junitVersion}"
     testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:${junitVersion}"
+    testImplementation 'org.apiguardian:apiguardian-api:1.1.2'
 
     javadocs project(':poi')
     javadocs project(':poi-ooxml')
diff --git a/poi/src/test/java9/module-info.java b/poi/src/test/java9/module-info.java
index 7a6de063c1..58ac2220c5 100644
--- a/poi/src/test/java9/module-info.java
+++ b/poi/src/test/java9/module-info.java
@@ -106,7 +106,6 @@ module org.apache.poi.poi {
     requires net.bytebuddy;
     requires org.junit.jupiter.api;
     requires org.junit.jupiter.params;
-    requires org.apiguardian.api;
 
     exports org.apache.poi.hpsf.basic to org.junit.platform.commons;
     exports org.apache.poi.hssf.record.pivot to org.junit.platform.commons;