diff --git a/llm_guard_api/pyproject.toml b/llm_guard_api/pyproject.toml
index 07d1e627..f02466cc 100644
--- a/llm_guard_api/pyproject.toml
+++ b/llm_guard_api/pyproject.toml
@@ -34,6 +34,7 @@ dependencies = [
     "opentelemetry-sdk-extension-aws==2.0.1",
     "opentelemetry-propagator-aws-xray==1.0.1",
     "psutil>=5.9",
+    "oldest-supported-numpy"
 ]
 
 [project.optional-dependencies]
diff --git a/pyproject.toml b/pyproject.toml
index d7816986..550714a0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ dependencies = [
   "torch>=2.0.1,<=2.3.1",
   "transformers==4.41.2",
   "structlog>=24",
-  "numpy>=1.26"
+  "oldest-supported-numpy"
 ]
 
 [project.optional-dependencies]