diff --git a/src/main/java/org/jabref/model/entry/AuthorList.java b/src/main/java/org/jabref/model/entry/AuthorList.java
index bd56f560bf5..f35cf1b7549 100644
--- a/src/main/java/org/jabref/model/entry/AuthorList.java
+++ b/src/main/java/org/jabref/model/entry/AuthorList.java
@@ -1,6 +1,8 @@
 package org.jabref.model.entry;
 
+import java.util.Collections;
 import java.util.List;
+import java.util.Map;
 import java.util.Objects;
 import java.util.WeakHashMap;
 import java.util.function.Function;
@@ -115,7 +117,7 @@
 @AllowedToUseLogic("because it needs access to AuthorList parser")
 public class AuthorList {
 
-    private static final WeakHashMap<String, AuthorList> AUTHOR_CACHE = new WeakHashMap<>();
+    private static final Map<String, AuthorList> AUTHOR_CACHE = Collections.synchronizedMap(new WeakHashMap<>());
     private final List<Author> authors;
     private AuthorList latexFreeAuthors;