diff --git a/.github/workflows/breakage-against-linux-ponyc-latest.yml b/.github/workflows/breakage-against-linux-ponyc-latest.yml
index bd64e61..781cede 100644
--- a/.github/workflows/breakage-against-linux-ponyc-latest.yml
+++ b/.github/workflows/breakage-against-linux-ponyc-latest.yml
@@ -9,7 +9,7 @@ jobs:
     name: Verify main against ponyc main on Linux
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-libressl-3.7.3:latest
+      image: ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-libressl-3.9.1:latest
     steps:
       - uses: actions/checkout@v4.1.1
       - name: Test with a recent ponyc from main
diff --git a/.github/workflows/nightlies.yml b/.github/workflows/nightlies.yml
index 4864095..8adc89e 100644
--- a/.github/workflows/nightlies.yml
+++ b/.github/workflows/nightlies.yml
@@ -9,7 +9,7 @@ jobs:
     name: Build and upload x86-64-unknown-linux-nightly to Cloudsmith
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-libressl-3.7.3:release
+      image: ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-libressl-3.9.1:release
     steps:
       - uses: actions/checkout@v4.1.1
       - name: Build and upload
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index e886743..125a99e 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -114,7 +114,7 @@ jobs:
     name: x86-64 Linux tests
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-libressl-3.7.3:release
+      image: ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-libressl-3.9.1:release
     steps:
       - uses: actions/checkout@v4.1.1
       - name: Test with the most recent ponyc release
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 57ec446..2c97596 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -31,7 +31,7 @@ jobs:
     needs:
       - pre-artefact-creation
     container:
-      image: ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-libressl-3.7.3:release
+      image: ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-libressl-3.9.1:release
     steps:
       - uses: actions/checkout@v4.1.1
       - name: Build and upload
diff --git a/Dockerfile b/Dockerfile
index d418c50..afdb241 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-libressl-3.7.3:release AS build
+FROM ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-libressl-3.9.1:release AS build
 
 WORKDIR /src/ponyup