diff --git a/backend/args.py b/backend/args.py
index 25d0599d..94cfaa02 100644
--- a/backend/args.py
+++ b/backend/args.py
@@ -69,7 +69,6 @@ parser.add_argument("--flash", action="store_true", help="install flash_attn")
 parser.add_argument("--xformers", action="store_true", help="install xformers")
 parser.add_argument("--nunchaku", action="store_true", help="install nunchaku for SVDQ inference")
 parser.add_argument("--bnb", action="store_true", help="install bitsandbytes for 4-bit inference")
-parser.add_argument("--ck", action="store_true", help="install comfy-kitchen for Mixed Precision inference")
 parser.add_argument("--onnxruntime-gpu", action="store_true", help="install nightly onnxruntime-gpu with cu130 support")
 
 parser.add_argument("--disable-sage", action="store_true", help="disable sageattention")
diff --git a/modules/launch_utils.py b/modules/launch_utils.py
index 011294d6..7ec2bae5 100644
--- a/modules/launch_utils.py
+++ b/modules/launch_utils.py
@@ -292,7 +292,6 @@ def prepare_environment():
     torch_command = os.environ.get("TORCH_COMMAND", f"pip install torch==2.10.0+cu130 torchvision==0.25.0+cu130 --extra-index-url {torch_index_url}")
     xformers_package = os.environ.get("XFORMERS_PACKAGE", f"xformers==0.0.34 --extra-index-url {torch_index_url}")
     bnb_package = os.environ.get("BNB_PACKAGE", "bitsandbytes==0.49.1")
-    ck_package = os.environ.get("CK_PACKAGE", "comfy-kitchen==0.2.8")
 
     packaging_package = os.environ.get("PACKAGING_PACKAGE", "packaging==26.0")
     gradio_package = os.environ.get("GRADIO_PACKAGE", "gradio==4.40.0 gradio_rangeslider==0.0.8")
@@ -411,14 +410,6 @@ def prepare_environment():
         else:
             startup_timer.record("install bitsandbytes")
 
-    if args.ck and not is_installed("comfy_kitchen"):
-        try:
-            run_pip(f"install {ck_package}", "comfy-kitchen")
-        except RuntimeError:
-            print("Failed to install comfy-kitchen; Please manually install it")
-        else:
-            startup_timer.record("install comfy-kitchen")
-
     if not is_installed("ngrok") and args.ngrok:
         run_pip("install ngrok", "ngrok")
         startup_timer.record("install ngrok")
diff --git a/requirements.txt b/requirements.txt
index c37c6e37..909cce62 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@ GitPython==3.1.46
 Pillow==12.1.0
 accelerate==1.12.0
 audioop-lts==0.2.2;python_version>="3.13"
+comfy-kitchen==0.2.8
 diffusers==0.36.0
 diskcache==5.6.3
 einops==0.8.2