diff --git a/pyproject.toml b/pyproject.toml
index 90f83da..177955b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ readme = "README.md"
 requires-python = ">=3.13"
 dependencies = [
     "requests>=2.34.0",
-    "pycryptodome==3.23.0",
+    "pycryptodome==4.1.0",
     "fastapi==0.141.1",
     "uvicorn==0.52.4",
     "httpx==0.28.1",
diff --git a/requirements.txt b/requirements.txt
index 7c45ec0..a773b0b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 requests>=2.34.2
-pycryptodome==3.23.0
+pycryptodome==4.1.0
 fastapi==0.141.1
 uvicorn==0.52.4
 httpx==0.28.1