diff --git a/pyproject.toml b/pyproject.toml
index e5405ef..b450ac0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ dependencies = [
     "uvicorn==0.49.0",                                   # Server
     "opencv-python==4.13.0.92",                          # Frame extraction
     "requests==2.34.2",                                  # Model download
-    "onnxruntime==1.26.0; sys_platform == 'darwin' or (sys_platform == 'linux' and platform_machine == 'aarch64')",
+    "onnxruntime==1.27.0; sys_platform == 'darwin' or (sys_platform == 'linux' and platform_machine == 'aarch64')",
     "onnxruntime-gpu==1.26.0; sys_platform == 'win32' or (sys_platform == 'linux' and platform_machine == 'x86_64')",
     "numpy==2.4.6",                                      # Image batch processing
     # Security overrides for transitive dependencies
diff --git a/uv.lock b/uv.lock
index f5f9529..35219b2 100644
--- a/uv.lock
+++ b/uv.lock
@@ -360,7 +360,7 @@ wheels = [
 
 [[package]]
 name = "onnxruntime"
-version = "1.26.0"
+version = "1.27.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "flatbuffers" },
@@ -369,11 +369,11 @@ dependencies = [
     { name = "protobuf" },
 ]
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/81/b1/d111b1df656761f980d9e298a60039a9cb66036b1d039e777537743d0ac3/onnxruntime-1.26.0-cp312-cp312-macosx_14_0_arm64.whl", hash = "sha256:05b028781b322ad74b57ce5b50aa5280bb1fe96ceec334628ade681e0b24c1ac", size = 18016624, upload-time = "2026-05-12T00:41:01.735Z" },
-    { url = "https://files.pythonhosted.org/packages/f6/a0/3f9d896a0385a36bd04345d6d0b802821a5782adde562e7e135f6bb71c73/onnxruntime-1.26.0-cp312-cp312-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:91f2bb870a4b9224eba0a6728c1fa7a9e552b8e59e1083c51fbbc3d013f2b5c0", size = 16052692, upload-time = "2026-05-08T19:07:13.829Z" },
-    { url = "https://files.pythonhosted.org/packages/cf/a2/c801242685e0ce48a4ca51dfafbb588765e0446397e123be53ba5598f3f5/onnxruntime-1.26.0-cp313-cp313-macosx_14_0_arm64.whl", hash = "sha256:ccce19c5f771b8268902f77d9fed9e88f9499465d6780808faa6611a789d33f0", size = 18016563, upload-time = "2026-05-08T19:07:28.081Z" },
-    { url = "https://files.pythonhosted.org/packages/e2/64/0492c0b1db04e29b2630c87cfa36f9d6872b1ca8614b90c5cad58fac7d76/onnxruntime-1.26.0-cp313-cp313-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:bdbed8cf3b672b66acb032f33a253bc27f42bce6ece48ae3fab4fa483a5e96e0", size = 16052634, upload-time = "2026-05-08T19:07:16.885Z" },
-    { url = "https://files.pythonhosted.org/packages/c3/f5/47b0676408abec652c14b84d7173e389837832d850c24f87184277313e8d/onnxruntime-1.26.0-cp313-cp313t-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:5e016edc15d3c19f36807e1c6b10be5b27807688c32720f91b5ae480a95215d0", size = 16057265, upload-time = "2026-05-08T19:07:19.603Z" },
+    { url = "https://files.pythonhosted.org/packages/c3/b7/dd3a524ed93a820dff1af902d0412957ab12499953333e9daa01af5bc480/onnxruntime-1.27.0-cp312-cp312-macosx_14_0_arm64.whl", hash = "sha256:a14c2ce45312def86b77aea651f46565e45960cf5f0721bfdff449165086ab76", size = 18433506, upload-time = "2026-06-15T22:43:47.026Z" },
+    { url = "https://files.pythonhosted.org/packages/84/86/c3b6b17745a1997d784dadc9bd88d713d2e6721139a5a0e885b28cfb79b1/onnxruntime-1.27.0-cp312-cp312-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:c6fddce0539a4898c7bef35b052ffd37935b2190e35488eab99ce91887743ea1", size = 16438140, upload-time = "2026-06-15T22:42:40.666Z" },
+    { url = "https://files.pythonhosted.org/packages/fb/2b/54208fd03ad410480bc17edf4869376362da8bbf46fe186ddf4cb5cc20fe/onnxruntime-1.27.0-cp313-cp313-macosx_14_0_arm64.whl", hash = "sha256:b3e5b58b8c89c2b20e086e890aa9527377e5c240dc3ecc1640d18e07705eeb1c", size = 18432958, upload-time = "2026-06-15T22:42:53.105Z" },
+    { url = "https://files.pythonhosted.org/packages/ce/88/24fc51fcbb126da6d032372314e47b55c3faad58f2aa78c0e199ccd20b9c/onnxruntime-1.27.0-cp313-cp313-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:48b3d87eb560ff6a772240506f3c78d6d27c63cafedd5c775672e1194f968cfd", size = 16438180, upload-time = "2026-06-15T22:42:43.093Z" },
+    { url = "https://files.pythonhosted.org/packages/5e/7d/e6bb1c6445c94f708c38cd8fbb7bf0264108c33498b9445c93e60fe6d329/onnxruntime-1.27.0-cp313-cp313t-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:54c0c4e9202c36c4ecdb1f3443f5dfbfd5ee3b54d1362c4b4c6134110e74fb32", size = 16443331, upload-time = "2026-06-15T22:42:45.649Z" },
 ]
 
 [[package]]
@@ -464,7 +464,7 @@ requires-dist = [
     { name = "fastapi", specifier = "==0.137.2" },
     { name = "h11", specifier = "==0.16.0" },
     { name = "numpy", specifier = "==2.4.6" },
-    { name = "onnxruntime", marker = "(platform_machine == 'aarch64' and sys_platform == 'linux') or sys_platform == 'darwin'", specifier = "==1.26.0" },
+    { name = "onnxruntime", marker = "(platform_machine == 'aarch64' and sys_platform == 'linux') or sys_platform == 'darwin'", specifier = "==1.27.0" },
     { name = "onnxruntime-gpu", marker = "(platform_machine == 'x86_64' and sys_platform == 'linux') or sys_platform == 'win32'", specifier = "==1.26.0" },
     { name = "opencv-python", specifier = "==4.13.0.92" },
     { name = "protobuf", specifier = "==7.35.1" },