diff --git a/pyproject.toml b/pyproject.toml
index 6bf418d..5e2681a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ packages = [{ include = "compute_modules" }]
 [tool.poetry.dependencies]
 python = "^3.9"
 requests = "^2.32.3"
-external-systems = {version = "^0.108.0", extras = ["sources"]}
+external-systems = {version = "^0.109.0", extras = ["sources"]}
 pyyaml = { version = "^6.0.1", optional = true }