diff --git a/Dockerfile b/Dockerfile
index 8acfb10..deb9e4d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -46,7 +46,7 @@ RUN pip install --no-cache-dir \
 ARG WORKSPACE=/home/dgp
 WORKDIR ${WORKSPACE}
 COPY requirements.txt requirements-dev.txt /tmp/
-RUN pip install --no-cache-dir cython==0.29.21 numpy==1.19.4
+RUN pip install --no-cache-dir cython==0.29.30 numpy==1.20.3
 RUN pip install --no-cache-dir -r /tmp/requirements.txt
 RUN pip install --no-cache-dir -r /tmp/requirements-dev.txt
 
diff --git a/Makefile b/Makefile
index fa86bd3..fda0f75 100644
--- a/Makefile
+++ b/Makefile
@@ -53,7 +53,7 @@ clean:
 	find dgp/contribs/pd -name "*_pb2.py" | xargs rm -rf
 
 develop:
-	pip install cython==0.29.21 numpy==1.19.4 grpcio==1.41.0 grpcio-tools==1.41.0
+	pip install cython==0.29.30 numpy==1.20.3 grpcio==1.41.0 grpcio-tools==1.41.0
 	pip install --editable .
 
 docker-build:
@@ -83,7 +83,7 @@ setup-linters:
 	pre-commit install
 	pre-commit install --hook-type commit-msg
 
-test: clean build-proto
+test: build-proto
 	PYTHONPATH=$(PWD):$(PYTHONPATH) \
 	$(UNITTEST) $(UNITTEST_OPTS) $(PWD)/tests/
 
diff --git a/docs/VIRTUAL_ENV.md b/docs/VIRTUAL_ENV.md
index 93cc273..c98525a 100644
--- a/docs/VIRTUAL_ENV.md
+++ b/docs/VIRTUAL_ENV.md
@@ -22,7 +22,7 @@ DGP.
 
 ```sh
 dgp$ pip install --upgrade pip
-dgp$ pip install cython==0.29.21 numpy==1.19.4
+dgp$ pip install cython==0.29.30 numpy==1.20.3
 dgp$ pip install -r requirements.txt -r requirements-dev.txt
 ```
 
diff --git a/requirements.txt b/requirements.txt
index 7f16dad..f6eafce 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,4 +12,5 @@ torch>=1.8.1
 torchvision>=0.9.1
 tqdm>=4.29.1
 tenacity>=6.0.0
-xarray==2022.6.0
+xarray>=2022.6.0
+numpy>=1.20.3
diff --git a/setup.py b/setup.py
index b01ffc7..a20c81f 100644
--- a/setup.py
+++ b/setup.py
@@ -55,7 +55,7 @@ def run(self):
         'dgp_cli=dgp.cli:cli',
     ]},
     include_package_data=True,
-    setup_requires=['cython==0.29.21', 'grpcio==1.41.0', 'grpcio-tools==1.41.0'],
+    setup_requires=['cython==0.29.30', 'grpcio==1.41.0', 'grpcio-tools==1.41.0'],
     install_requires=requirements,
     extras_require={'dev': requirements_dev},
     zip_safe=False,