diff --git a/pyproject.toml b/pyproject.toml
index 04d2196..515bc80 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,6 +45,7 @@ dependencies = [
 [project.optional-dependencies]
 # DCT steganography support (v3.0+)
 dct = [
+    "numpy>=2.0.0",
     "scipy>=1.10.0",
     "jpegio>=0.2.0",
 ]
@@ -61,6 +62,7 @@ web = [
     "qrcode>=7.3.0",
     "pyzbar>=0.1.9",
     # Include DCT support for web UI
+    "numpy>=2.0.0",
     "scipy>=1.10.0",
     "jpegio>=0.2.0",
 ]
@@ -71,6 +73,7 @@ api = [
     "qrcode>=7.30",
     "pyzbar>=0.1.9",
     # Include DCT support for API
+    "numpy>=2.0.0",
     "scipy>=1.10.0",
     "jpegio>=0.2.0",
 ]