diff --git a/pyproject.toml b/pyproject.toml
index eeb9488..1185fe6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ classifiers = [
 dependencies = [
     "pyparsing <= 3.2.1",
     "pandas <= 2.2.3",
-    "pyzotero <= 1.6.3",
+    "pyzotero <= 1.6.4",
     "networkx <= 3.4.2",
     "matplotlib <= 3.10.0"
 ]