diff --git a/dist_config.py b/dist_config.py
index 87e15da2..6f732fe2 100644
--- a/dist_config.py
+++ b/dist_config.py
@@ -12,7 +12,7 @@
 SDIST_CONFIG = {
     'image': 'nvidia/cuda:11.2.2-devel-centos7',
     # This image contains cuDNN and NCCL.
-    'verify_image': 'nvidia/cuda:11.4.2-cudnn8-devel-{system}',
+    'verify_image': 'nvidia/cuda:11.4.3-cudnn8-devel-{system}',
     'verify_systems': ['ubuntu18.04'],
 }
 
@@ -52,7 +52,7 @@
             '11.4.3-runtime-ubuntu18.04',
             '11.5.2-runtime-ubuntu18.04',
             '11.6.2-runtime-ubuntu18.04',
-            '11.7.0-runtime-ubuntu18.04',
+            '11.7.1-runtime-ubuntu18.04',
             '11.8.0-runtime-ubuntu18.04',
         ],
         'system_packages': '',
@@ -72,12 +72,12 @@
         'verify_image': 'nvidia/cuda:{system}',
         'verify_systems': [
             # Test on all supported CUDA version variants.
-            '11.2.1-runtime-ubi8',
-            '11.3.0-runtime-ubi8',
-            '11.4.2-runtime-ubi8',
-            '11.5.1-runtime-ubi8',
-            '11.6.1-runtime-ubi8',
-            '11.7.0-runtime-ubi8',
+            '11.2.2-runtime-ubi8',
+            '11.3.1-runtime-ubi8',
+            '11.4.3-runtime-ubi8',
+            '11.5.2-runtime-ubi8',
+            '11.6.2-runtime-ubi8',
+            '11.7.1-runtime-ubi8',
             '11.8.0-runtime-ubi8',
         ],
         'system_packages': '',
@@ -96,8 +96,8 @@
         'verify_image': 'nvidia/cuda:{system}',
         'verify_systems': [
             # Test on all supported CUDA version variants.
-            '12.0.0-runtime-ubuntu18.04',
-            '12.1.0-runtime-ubuntu18.04',
+            '12.0.1-runtime-ubuntu18.04',
+            '12.1.1-runtime-ubuntu22.04',
         ],
         'system_packages': '',
     },
@@ -116,8 +116,8 @@
         'verify_image': 'nvidia/cuda:{system}',
         'verify_systems': [
             # Test on all supported CUDA version variants.
-            '12.0.0-runtime-ubi8',
-            '12.1.0-runtime-ubi8',
+            '12.0.1-runtime-ubi8',
+            '12.1.1-runtime-ubi8',
         ],
         'system_packages': '',
     },
diff --git a/verifier/Dockerfile.debian b/verifier/Dockerfile.debian
index 5185e1c1..3ffa9fb6 100644
--- a/verifier/Dockerfile.debian
+++ b/verifier/Dockerfile.debian
@@ -11,7 +11,6 @@ RUN export DEBIAN_FRONTEND=noninteractive && \
     apt-get -y update && \
     apt-get -y install gcc g++ make patch git && \
     apt-get -y install libbz2-dev liblzma-dev libssl-dev libreadline-dev libffi-dev && \
-    apt-get -y install python && \
     rm -rf /var/lib/apt/lists/* /var/cache/apt/archives/*
 
 # Install pyenv requirements.