From 19a02848a6b9518e82b1a1c0d1807b71e43214fe Mon Sep 17 00:00:00 2001
From: bailey <bailey.pearson@mongodb.com>
Date: Wed, 1 Oct 2025 16:05:51 -0600
Subject: [PATCH 1/3] test rhel80 builds

---
 .github/docker/Dockerfile.glibc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/docker/Dockerfile.glibc b/.github/docker/Dockerfile.glibc
index 2dc4991..6ca3120 100644
--- a/.github/docker/Dockerfile.glibc
+++ b/.github/docker/Dockerfile.glibc
@@ -1,4 +1,4 @@
-FROM ubuntu:noble AS build
+FROM redhat/ubi8 AS build
 
 ARG NODE_VERSION=20.19.0
 # Possible values: s390x, arm64, x64

From 108ec00f1b15ee0916be0d5b80894e502035a953 Mon Sep 17 00:00:00 2001
From: bailey <bailey.pearson@mongodb.com>
Date: Thu, 2 Oct 2025 11:15:49 -0600
Subject: [PATCH 2/3] test for libc

---
 .github/docker/Dockerfile.glibc |  2 +-
 test/unit/glibc.test.ts         | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 test/unit/glibc.test.ts

diff --git a/.github/docker/Dockerfile.glibc b/.github/docker/Dockerfile.glibc
index 6ca3120..5aeb434 100644
--- a/.github/docker/Dockerfile.glibc
+++ b/.github/docker/Dockerfile.glibc
@@ -10,7 +10,7 @@ ENV PATH=$PATH:/nodejs/bin
 WORKDIR /mongodb-client-encryption
 COPY . .
 
-RUN apt-get -qq update && apt-get -qq install -y python3 build-essential git && ldd --version
+RUN yum install -y python39 git make gcc-c++
 
 RUN npm run install:libmongocrypt
 
diff --git a/test/unit/glibc.test.ts b/test/unit/glibc.test.ts
new file mode 100644
index 0000000..ad31b81
--- /dev/null
+++ b/test/unit/glibc.test.ts
@@ -0,0 +1,21 @@
+import { expect } from 'chai';
+import { execSync } from 'child_process';
+
+describe('glibc requirements', function () {
+  let lddOutput: string;
+  beforeEach(function () {
+    if (process.platform !== 'linux') return this.skip();
+
+    try {
+      lddOutput = execSync('ldd --version', { encoding: 'utf8' });
+    } catch {
+      this.skip();
+    }
+
+    return;
+  });
+
+  it('glibc is 2.28', function () {
+    expect(lddOutput).to.contain('2.28');
+  });
+});

From 62420e50a3d7ec597f6889d2b64d1f54b8abf180 Mon Sep 17 00:00:00 2001
From: bailey <bailey.pearson@mongodb.com>
Date: Thu, 2 Oct 2025 11:26:35 -0600
Subject: [PATCH 3/3] update readme

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 1b04ee8..e13b34b 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,7 @@ Only suitable for local development:
 Below are the platforms that are available as prebuilds on each github release.
 `prebuild-install` downloads these automatically depending on the platform you are running npm install on.
 
-- Linux GLIBC 2.23 or later
+- Linux GLIBC 2.28 or later
     - s390x
     - arm64
     - x64