diff --git a/pom.xml b/pom.xml
index 2691761..9e3cd8a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,7 +39,7 @@
 
         <iridium.version>0.7.3</iridium.version>
         <multibase.version>4.1.0</multibase.version>
-        <multicodec.version>3.1.0</multicodec.version>
+        <multicodec.version>4.0.0</multicodec.version>
 
         <jakarta.json.version>2.0.1</jakarta.json.version>
 
diff --git a/src/main/java/com/apicatalog/cli/command/MulticodecCmd.java b/src/main/java/com/apicatalog/cli/command/MulticodecCmd.java
index a34132d..af80aa3 100644
--- a/src/main/java/com/apicatalog/cli/command/MulticodecCmd.java
+++ b/src/main/java/com/apicatalog/cli/command/MulticodecCmd.java
@@ -29,7 +29,7 @@
 @Command(name = "multicodec", mixinStandardHelpOptions = false, description = "Add, remove, detect, or list multicodec headers.", sortOptions = true, descriptionHeading = "%n", parameterListHeading = "%nParameters:%n", optionListHeading = "%nOptions:%n")
 public final class MulticodecCmd implements Callable<Integer> {
 
-    static final MulticodecDecoder DECODER = MulticodecDecoder.getInstance();
+    static final MulticodecDecoder DECODER = MulticodecDecoder.newInstance();
     static final MultibaseDecoder MULTIBASE = MultibaseDecoder.getInstance();
 
     static class ModeGroup {