diff --git a/language-support/java/codegen/src/ledger-tests/resources/logback-test.xml b/language-support/java/codegen/src/ledger-tests/resources/logback-test.xml
index 913b009de9..4e39fdc8f6 100644
--- a/language-support/java/codegen/src/ledger-tests/resources/logback-test.xml
+++ b/language-support/java/codegen/src/ledger-tests/resources/logback-test.xml
@@ -8,10 +8,10 @@
         </encoder>
     </appender>
 
-    <logger name="com.digitalasset" level="DEBUG" />
-    <logger name="com.daml" level="DEBUG" />
+    <logger name="com.digitalasset" level="INFO" />
+    <logger name="com.daml" level="INFO" />
 
     <root level="WARN">
         <appender-ref ref="STDOUT" />
     </root>
-</configuration>
\ No newline at end of file
+</configuration>
diff --git a/ledger/sandbox/src/test/resources/logback-test.xml b/ledger/sandbox/src/test/resources/logback-test.xml
new file mode 100644
index 0000000000..baf1915b29
--- /dev/null
+++ b/ledger/sandbox/src/test/resources/logback-test.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <appender name="FILE" class="ch.qos.logback.core.FileAppender">
+        <file>sandbox.log</file>
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg %mdc%n</pattern>
+        </encoder>
+    </appender>
+
+    <appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
+        <appender-ref ref="FILE"/>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT"/>
+        <appender-ref ref="ASYNC"/>
+    </root>
+</configuration>