diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d8c4a89..01244f6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,6 +7,8 @@ stages:
 variables:
   MAVEN_OPTS: "-Dmaven.repo.local=.m2"
 
+image: maven:3-jdk-11
+
 cache:
   paths:
     - .m2/
@@ -35,7 +37,6 @@ package:
    - target/*
 
 maven-repo:
- image: maven:3-jdk-11
  stage: build
  needs: [ package ]
  script:
@@ -45,7 +46,6 @@ maven-repo:
 
 ossrh:
  stage: deploy
- image: maven:3-jdk-11
  only:
   - tags
  script:
diff --git a/README.md b/README.md
index ba58689..8eb4cad 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ ported to all releases.
 
 ## Installation
 
-Irked is available from the [Maven Central Repository](https://central.sonatype.com/artifact/tech.greenfield/irked-vertx/4.5.11.2).
+Irked is available from the [Maven Central Repository](https://central.sonatype.com/artifact/tech.greenfield/irked-vertx/4.5.11.3).
 
 If using Maven, add Irked as a dependency in your `pom.xml` file:
 
@@ -23,12 +23,12 @@ If using Maven, add Irked as a dependency in your `pom.xml` file:
 <dependency>
     <groupId>tech.greenfield</groupId>
     <artifactId>irked-vertx</artifactId>
-    <version>4.5.11.2</version>
+    <version>4.5.11.3</version>
 </dependency>
 ```
 
 For other build tools, see the Maven Central website for the syntax, but it generally
-boils down to just using `tech.greenfield:irked-vertx:4.5.11.2` as the dependency string.
+boils down to just using `tech.greenfield:irked-vertx:4.5.11.3` as the dependency string.
 
 ## Quick Start
 
diff --git a/pom.xml b/pom.xml
index 5299351..f6b8184 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
 	<groupId>tech.greenfield</groupId>
 	<artifactId>irked-vertx</artifactId>
-	<version>4.5.11.2</version>
+	<version>4.5.11.3</version>
 	<packaging>jar</packaging>
 	<name>irked-vertx</name>
 	<description>Opinionated framework for vertx-web route configuration and dispatch</description>
diff --git a/src/main/java/tech/greenfield/vertx/irked/helpers/JsonDecodingExceptionFormatter.java b/src/main/java/tech/greenfield/vertx/irked/helpers/JsonDecodingExceptionFormatter.java
index d6c8d4b..b6ba675 100644
--- a/src/main/java/tech/greenfield/vertx/irked/helpers/JsonDecodingExceptionFormatter.java
+++ b/src/main/java/tech/greenfield/vertx/irked/helpers/JsonDecodingExceptionFormatter.java
@@ -2,10 +2,12 @@
 
 import java.util.List;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import com.fasterxml.jackson.core.JsonLocation;
 import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.JsonMappingException.Reference;
+import com.fasterxml.jackson.databind.exc.InvalidFormatException;
 import com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException;
 
 import io.vertx.core.json.DecodeException;
@@ -16,11 +18,24 @@ public static String formatFriendlyErrorMessage(DecodeException e) {
 		var cause = e.getCause();
 		if (cause instanceof UnrecognizedPropertyException)
 			return formatUnrecognizedPropertyMessage((UnrecognizedPropertyException)cause);
+		if (cause instanceof InvalidFormatException)
+			return formatInvalidFormatMessage((InvalidFormatException)cause);
 		if (cause instanceof JsonMappingException)
 			return formatJsonMappingMessage((JsonMappingException)cause);
 		return "Unexpected JSON decoding problem: " + e.getMessage();
 	}
 
+	public static String formatInvalidFormatMessage(InvalidFormatException e) {
+		var target = e.getTargetType();
+		var field = e.getPath().stream().reduce((a,b) -> b).map(r -> r.getFieldName()).orElse("UNKNOWN");
+		if (target.isEnum())
+			return String.format("Value '%s' is not one of the supported values for '%s', out of: %s %s", e.getValue(),
+					field, Stream.of(target.getEnumConstants()).map(Object::toString).collect(Collectors.joining(", ")),
+					describeLocation(e.getPath(), e.getLocation()));
+		return String.format("Value '%s' is a valid value for '' %s", e.getValue(), field,
+				describeLocation(e.getPath(), e.getLocation()));
+	}
+
 	public static String formatJsonMappingMessage(JsonMappingException e) {
 		return String.format("%s %s", e.getOriginalMessage(), describeLocation(e.getPath(), e.getLocation()));