diff --git a/bundlebee-core/src/main/java/io/yupiik/bundlebee/core/lang/SubstitutorProducer.java b/bundlebee-core/src/main/java/io/yupiik/bundlebee/core/lang/SubstitutorProducer.java
index 6f051e62..5539eb6c 100644
--- a/bundlebee-core/src/main/java/io/yupiik/bundlebee/core/lang/SubstitutorProducer.java
+++ b/bundlebee-core/src/main/java/io/yupiik/bundlebee/core/lang/SubstitutorProducer.java
@@ -178,7 +178,7 @@ protected String doSubstitute(final AtomicReference<Substitutor> self, final Con
             }
         }
         if (placeholder.startsWith("bundlebee-uppercase:")) {
-            return placeholder.substring("bundlebee-uppercase:".length()).toLowerCase(ROOT);
+            return placeholder.substring("bundlebee-uppercase:".length()).toUpperCase(ROOT);
         }
         if (placeholder.startsWith("bundlebee-lowercase:")) {
             return placeholder.substring("bundlebee-lowercase:".length()).toLowerCase(ROOT);
diff --git a/bundlebee-core/src/test/java/io/yupiik/bundlebee/core/lang/SubstitutorProducerTest.java b/bundlebee-core/src/test/java/io/yupiik/bundlebee/core/lang/SubstitutorProducerTest.java
index efe27ac2..5090de16 100644
--- a/bundlebee-core/src/test/java/io/yupiik/bundlebee/core/lang/SubstitutorProducerTest.java
+++ b/bundlebee-core/src/test/java/io/yupiik/bundlebee/core/lang/SubstitutorProducerTest.java
@@ -93,6 +93,13 @@ public <U extends OnPlaceholder> Event<U> select(final TypeLiteral<U> subtype, f
         }
     }
 
+    @Test
+    void uppercase() {
+        assertEquals(
+                "UP",
+                substitutor.getOrDefault("bundlebee-uppercase:up", "failed"));
+    }
+
     @Test
     void digest() {
         assertEquals(
diff --git a/pom.xml b/pom.xml
index aff4cd65..155d7771 100644
--- a/pom.xml
+++ b/pom.xml
@@ -184,7 +184,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.8.1</version>
+        <version>3.11.0</version>
         <configuration>
           <source>11</source>
           <target>11</target>
@@ -198,7 +198,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
-        <version>3.0.0-M7</version>
+        <version>3.0.0</version>
         <configuration>
           <environmentVariables>
             <TEST_ENV_VAR>set</TEST_ENV_VAR>