Upgrade tox.
diff --git a/.github/workflows/integration-tests.yml b/.github/workflows/integration-tests.yml
index be79036..1183e7b 100644
--- a/.github/workflows/integration-tests.yml
+++ b/.github/workflows/integration-tests.yml
@@ -76,7 +76,7 @@
 
       - name: Install Python Dependencies
         run: |
-          pip install "tox==4.1.2"
+          pip install "tox==4.4.2"
 
       - name: Run tox target
         run: |
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9fd11d4..9d881eb 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -114,7 +114,7 @@
 
       - name: Install Python Dependencies
         run: |
-          pip install "tox==4.1.2"
+          pip install "tox==4.4.2"
 
       - name: Run unit tests tox target
         run: |
@@ -161,7 +161,7 @@
 
       - name: Install Python Dependencies
         run: |
-          pip install "tox==4.1.2"
+          pip install "tox==4.4.2"
 
       - name: Run Checks
         run: |
@@ -203,7 +203,7 @@
 
       - name: Install Python Dependencies
         run: |
-          pip install "tox==4.1.2"
+          pip install "tox==4.4.2"
 
       - name: Run Checks
         run: |
@@ -272,7 +272,7 @@
 
       - name: Install Python Dependencies
         run: |
-          pip install "tox==4.1.2"
+          pip install "tox==4.4.2"
 
       - name: Install Library Into Virtualenv
         run: |
@@ -340,7 +340,7 @@
 
       - name: Install Python Dependencies
         run: |
-          pip install "tox==4.1.2"
+          pip install "tox==4.4.2"
 
       - name: Run Micro Benchmarks
         run: |
@@ -387,7 +387,7 @@
 
       - name: Install Python Dependencies
         run: |
-          pip install "tox==4.1.2"
+          pip install "tox==4.4.2"
 
       - name: Build Docs
         run: |
diff --git a/.github/workflows/publish_pricing_to_s3.yml b/.github/workflows/publish_pricing_to_s3.yml
index 7f91f2e..4ea3f9d 100644
--- a/.github/workflows/publish_pricing_to_s3.yml
+++ b/.github/workflows/publish_pricing_to_s3.yml
@@ -36,7 +36,7 @@
 
       - name: Install Python Dependencies
         run: |
-          pip install "tox==3.27.1"
+          pip install "tox==4.4.2"
 
       - name: Generate and publish pricing data
         env:
diff --git a/contrib/Dockerfile b/contrib/Dockerfile
index 924db0f..2db5aff 100644
--- a/contrib/Dockerfile
+++ b/contrib/Dockerfile
@@ -54,7 +54,7 @@
 RUN python3.8 -m pip install --upgrade pip
 
 RUN set -e && \
-    python3.8 -m pip install --no-cache-dir "tox==3.27.1"
+    python3.8 -m pip install --no-cache-dir "tox==4.4.2"
 
 COPY . /libcloud