diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
index 3a76a35649a..d475cfb8e10 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
@@ -127,6 +127,7 @@ public abstract class AbstractPhpCodegen extends DefaultCodegen implements Codeg
         typeMapping.put("ByteArray", "string");
         typeMapping.put("UUID", "string");
         typeMapping.put("URI", "string");
+        typeMapping.put("AnyType", "mixed");
 
         cliOptions.add(new CliOption(CodegenConstants.MODEL_PACKAGE, CodegenConstants.MODEL_PACKAGE_DESC));
         cliOptions.add(new CliOption(CodegenConstants.API_PACKAGE, CodegenConstants.API_PACKAGE_DESC));