diff --git a/src/main/java/edu/kit/datamanager/pit/pitservice/impl/EmbeddedStrictValidatorStrategy.java b/src/main/java/edu/kit/datamanager/pit/pitservice/impl/EmbeddedStrictValidatorStrategy.java
index d08224c5..afc65d97 100644
--- a/src/main/java/edu/kit/datamanager/pit/pitservice/impl/EmbeddedStrictValidatorStrategy.java
+++ b/src/main/java/edu/kit/datamanager/pit/pitservice/impl/EmbeddedStrictValidatorStrategy.java
@@ -29,6 +29,7 @@
 public class EmbeddedStrictValidatorStrategy implements IValidationStrategy {
 
     private static final Logger LOG = LoggerFactory.getLogger(EmbeddedStrictValidatorStrategy.class);
+    protected static final Executor EXECUTOR = Executors.newWorkStealingPool();
 
     @Autowired
     public AsyncLoadingCache<String, TypeDefinition> typeLoader;
@@ -65,7 +66,7 @@ public void validate(PIDRecord pidRecord) throws RecordValidationException, Exte
                                                 String.format("No type found for identifier %s.", profilePID));
                                     }
                                     this.strictProfileValidation(pidRecord, profileDefinition);
-                                });
+                                }, EXECUTOR);
                     } catch (RuntimeException e) {
                         LOG.error("Could not resolve identifier {}.", profilePID);
                         throw new ExternalServiceException(
diff --git a/src/main/java/edu/kit/datamanager/pit/typeregistry/impl/TypeRegistry.java b/src/main/java/edu/kit/datamanager/pit/typeregistry/impl/TypeRegistry.java
index f43530da..c964a80b 100644
--- a/src/main/java/edu/kit/datamanager/pit/typeregistry/impl/TypeRegistry.java
+++ b/src/main/java/edu/kit/datamanager/pit/typeregistry/impl/TypeRegistry.java
@@ -40,6 +40,7 @@
 public class TypeRegistry implements ITypeRegistry {
 
     private static final Logger LOG = LoggerFactory.getLogger(TypeRegistry.class);
+    protected static final Executor EXECUTOR = Executors.newWorkStealingPool(35);
 
     @Autowired
     public AsyncLoadingCache<String, TypeDefinition> typeCache;
@@ -108,7 +109,7 @@ private TypeDefinition constructTypeDefinition(JsonNode registryRepresentation)
                                 final String repeatable = semantics.path("repeatable").asText("No");
                                 typeDefinition.setRepeatable(!"No".equalsIgnoreCase(repeatable));
                                 properties.put(name, typeDefinition);
-                            });
+                            }, EXECUTOR);
                 })
                 .collect(Collectors.toList());