diff --git a/release/long_running_distributed_tests/cluster.yaml b/release/long_running_distributed_tests/cluster.yaml
index 152642d55..8677cfe0a 100644
--- a/release/long_running_distributed_tests/cluster.yaml
+++ b/release/long_running_distributed_tests/cluster.yaml
@@ -30,7 +30,7 @@ worker_nodes:
 
 setup_commands:
   - apt-get install -y libglib2.0-0 libcudnn7=7.6.5.32-1+cuda10.1
-  - pip install -U https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-1.1.0.dev0-cp37-cp37m-manylinux2014_x86_64.whl
+  - pip install -U https://s3-us-west-2.amazonaws.com/ray-wheels/releases/ray-1.1.0/c7239d7b738919daa2fad65e26d3634a9f36f2eb/ray-1.1.0.dev0-cp37-cp37m-manylinux2014_x86_64.whl
 
 # Command to start ray on the head node. You don't need to change this.
 head_start_ray_commands:
diff --git a/release/microbenchmark/cluster.yaml b/release/microbenchmark/cluster.yaml
index 6e84b336a..e5a8906ca 100644
--- a/release/microbenchmark/cluster.yaml
+++ b/release/microbenchmark/cluster.yaml
@@ -3,7 +3,7 @@ cluster_name: ray-release-microbenchmark
 docker:
     image: anyscale/ray:latest
     container_name: ray_container
-    pull_before_run: False
+    pull_before_run: True
 
 provider:
     type: aws
diff --git a/release/rllib_tests/regression_tests/cluster.yaml b/release/rllib_tests/regression_tests/cluster.yaml
index 6a80c80d8..002af1f9f 100644
--- a/release/rllib_tests/regression_tests/cluster.yaml
+++ b/release/rllib_tests/regression_tests/cluster.yaml
@@ -25,7 +25,7 @@ head_node:
 # List of shell commands to run to set up nodes.
 setup_commands:
     - apt-get install -y libglib2.0-0 libcudnn7=7.6.5.32-1+cuda10.1
-    - pip install -U https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-1.1.0.dev0-cp37-cp37m-manylinux2014_x86_64.whl
+    - pip install -U https://s3-us-west-2.amazonaws.com/ray-wheels/releases/ray-1.1.0/c7239d7b738919daa2fad65e26d3634a9f36f2eb/ray-1.1.0.dev0-cp37-cp37m-manylinux2014_x86_64.whl
 
 # Command to start ray on the head node. You don't need to change this.
 head_start_ray_commands:
diff --git a/release/rllib_tests/stress_tests/cluster.yaml b/release/rllib_tests/stress_tests/cluster.yaml
index e31ecbdd9..df9e765b0 100644
--- a/release/rllib_tests/stress_tests/cluster.yaml
+++ b/release/rllib_tests/stress_tests/cluster.yaml
@@ -33,7 +33,7 @@ file_mounts: {
 
 setup_commands:
     - apt-get install -y libglib2.0-0 libcudnn7=7.6.5.32-1+cuda10.1
-    - pip install -U https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-1.1.0.dev0-cp37-cp37m-manylinux2014_x86_64.whl
+    - pip install -U https://s3-us-west-2.amazonaws.com/ray-wheels/releases/ray-1.1.0/c7239d7b738919daa2fad65e26d3634a9f36f2eb/ray-1.1.0.dev0-cp37-cp37m-manylinux2014_x86_64.whl
 
 worker_setup_commands: []
 
diff --git a/release/stress_tests/cluster.yaml b/release/stress_tests/cluster.yaml
index 45a10b8dc..93dd8cde3 100644
--- a/release/stress_tests/cluster.yaml
+++ b/release/stress_tests/cluster.yaml
@@ -89,7 +89,7 @@ setup_commands:
     - pip install terminado
     - pip install boto3==1.4.8 cython==0.29.0
     # - cd ray/python; git checkout master; git pull; pip install -e . --verbose
-    - "pip install https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-1.1.0.dev0-cp38-cp38-manylinux2014_x86_64.whl"
+    - "pip install https://s3-us-west-2.amazonaws.com/ray-wheels/releases/ray-1.1.0/c7239d7b738919daa2fad65e26d3634a9f36f2eb/ray-1.1.0.dev0-cp38-cp38-manylinux2014_x86_64.whl"
 # Custom commands that will be run on the head node after common setup.
 head_setup_commands: []