diff --git a/src/nodenorm/biolink.py b/src/nodenorm/biolink.py
index d6e92ad..40f8d86 100644
--- a/src/nodenorm/biolink.py
+++ b/src/nodenorm/biolink.py
@@ -8,7 +8,7 @@
 # > get_normalized_nodes
 # > get_semantic_types
 
-DEFAULT_BIOLINK_MODEL_VERSION = "v4.3.3"
+DEFAULT_BIOLINK_MODEL_VERSION = "v4.4.3"
 BIOLINK_MODEL_VERSION = os.getenv("BIOLINK_VERSION", DEFAULT_BIOLINK_MODEL_VERSION)
 BIOLINK_MODEL_URL = (
     f"https://raw.githubusercontent.com/biolink/biolink-model/{BIOLINK_MODEL_VERSION}/biolink-model.yaml"