diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 71eb4ba..f403ade 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -14,6 +14,6 @@ RUN echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME \
   && chmod 0440 /etc/sudoers.d/$USERNAME
 USER $USERNAME
 RUN curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.2/install.sh | bash
-RUN [ "/bin/bash", "-c", "source $HOME/.nvm/nvm.sh && nvm i --no-progress 18.18.0 && nvm i --no-progress 20.7.0" ]
-RUN [ "/bin/bash", "-c", "source $HOME/.nvm/nvm.sh && nvm alias default 20" ]
+RUN [ "/bin/bash", "-c", "source $HOME/.nvm/nvm.sh && nvm i --no-progress 18.18.0 && nvm i --no-progress 20.7.0 && nvm i --no-progress 21.1.0" ]
+RUN [ "/bin/bash", "-c", "source $HOME/.nvm/nvm.sh && nvm alias default 21" ]
 ENV DEBIAN_FRONTEND=dialog
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ac388b1..8396dc3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,7 +36,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ["18.x", "20.x"]
+        node: ["18.x", "20.x", "21.x"]
         runner: ["windows-latest", "ubuntu-latest", "macos-latest"]
     steps:
       - uses: actions/checkout@v4
@@ -72,7 +72,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ["18", "20"]
+        node: ["18", "20", "21"]
     steps:
       - uses: actions/checkout@v4
       - uses: uraimo/run-on-arch-action@v2.5.1
@@ -116,7 +116,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ["18", "20"]
+        node: ["18", "20", "21"]
     steps:
       - uses: actions/checkout@v4
       - uses: uraimo/run-on-arch-action@v2.5.1
diff --git a/testInstall.js b/testInstall.js
index 7443ab8..b2114e0 100755
--- a/testInstall.js
+++ b/testInstall.js
@@ -6,7 +6,7 @@ const os = require('os');
 const path = require('path');
 const fs = require('fs');
 const spawnSync = require('child_process').spawnSync;
-const versions = ['18', '20'];
+const versions = ['18', '20', '21'];
 const tempInstallPath = path.resolve(os.tmpdir(), 'chromedriver-test');
 const packedFile = path.resolve(tempInstallPath, 'chromedriver.tgz');