diff --git a/docs/requirements.txt b/docs/requirements.txt
index 00dd4d2c1e..5303e5eb27 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -20,3 +20,4 @@ sphinxcontrib-serializinghtml
 sphinx-autodoc-typehints==1.11.1
 pandas
 einops
+cupy
diff --git a/docs/source/installation.md b/docs/source/installation.md
index 08ab109142..88d1f53cde 100644
--- a/docs/source/installation.md
+++ b/docs/source/installation.md
@@ -174,9 +174,9 @@ Since MONAI v0.2.0, the extras syntax such as `pip install 'monai[nibabel]'` is
 
 - The options are
 ```
-[nibabel, skimage, pillow, tensorboard, gdown, ignite, torchvision, itk, tqdm, lmdb, psutil, cucim, openslide, pandas, einops]
+[nibabel, skimage, pillow, tensorboard, gdown, ignite, torchvision, itk, tqdm, lmdb, psutil, cucim, openslide, pandas, einops, cupy]
 ```
 which correspond to `nibabel`, `scikit-image`, `pillow`, `tensorboard`,
-`gdown`, `pytorch-ignite`, `torchvision`, `itk`, `tqdm`, `lmdb`, `psutil`, `cucim`, `openslide-python`, `pandas` and `einops`, respectively.
+`gdown`, `pytorch-ignite`, `torchvision`, `itk`, `tqdm`, `lmdb`, `psutil`, `cucim`, `openslide-python`, `pandas`, `einops` and `cupy`, respectively.
 
 - `pip install 'monai[all]'` installs all the optional dependencies.
diff --git a/monai/config/deviceconfig.py b/monai/config/deviceconfig.py
index 273431fc72..6e5a8d4ed2 100644
--- a/monai/config/deviceconfig.py
+++ b/monai/config/deviceconfig.py
@@ -73,6 +73,7 @@ def get_optional_config_values():
     output["psutil"] = psutil_version
     output["pandas"] = get_package_version("pandas")
     output["einops"] = get_package_version("einops")
+    output["cupy"] = get_package_version("cupy")
 
     return output
 
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 785454ad5d..8e43c796ea 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -36,3 +36,4 @@ openslide-python==1.1.2
 pandas
 requests
 einops
+cupy
diff --git a/setup.cfg b/setup.cfg
index 6efe768a6f..e6ed0f3953 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -44,6 +44,7 @@ all =
     openslide-python==1.1.2
     pandas
     einops
+    cupy
 nibabel =
     nibabel
 skimage =
@@ -74,6 +75,8 @@ pandas =
     pandas
 einops =
     einops
+cupy =
+    cupy
 [flake8]
 select = B,C,E,F,N,P,T4,W,B9
 max_line_length = 120