diff --git a/History.md b/History.md
index 193f7bf3..bcadd643 100644
--- a/History.md
+++ b/History.md
@@ -1,6 +1,8 @@
 - upgraded en16931 validation to 1.3.8
 - Be able to embed Cross Industry Delivery Advice
 - update xr to v. 2.2
+- logging output now stderr again, since 2.4.0 it had mistakenly been on stdout
+
 2.5.0
 =======
 2022-04-07
diff --git a/validator/pom.xml b/validator/pom.xml
index 60d075a4..bc18ed0c 100644
--- a/validator/pom.xml
+++ b/validator/pom.xml
@@ -54,6 +54,13 @@
             <artifactId>logback-core</artifactId>
             <version>1.2.10</version>
         </dependency>
+
+        <dependency>
+            <!-- This library is needed so that logback stderr output is sent to, well, stderr, otherwise it lands in stdout -->
+            <groupId>org.codehaus.janino</groupId>
+            <artifactId>janino</artifactId>
+            <version>3.1.7</version>
+        </dependency>
         <!-- https://mvnrepository.com/artifact/com.googlecode.slf4j-maven-plugin-log/slf4j-maven-plugin-log -->
         <dependency>
             <groupId>com.googlecode.slf4j-maven-plugin-log</groupId>