diff --git a/pyproject.toml b/pyproject.toml
index f7b38c5..ef678f0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ classifiers = [
     "Topic :: Software Development :: Libraries",
 ]
 dependencies = [
-    "fastmcp>=2.0",
+    "fastmcp>=3.4.2",
     "httpx>=0.25",
     "cryptography>=41.0",
     "PyNaCl>=1.5",