diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 03c083792..c7908f154 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
         run: docker compose -f docker/Linux-JDK21/compose.yaml up --build --exit-code-from cantaloupe
       - name: Test in Linux GraalVM
         if: matrix.os == 'ubuntu-latest' && matrix.java == 'graalvm'
-        run: docker compose -f docker/Linux-GraalVM20/compose.yaml up --build --exit-code-from cantaloupe
+        run: docker compose -f docker/Linux-GraalVM-JDK21/compose.yaml up --build --exit-code-from cantaloupe
       - name: Test in Windows JDK 17 (LTS)
         if: matrix.os == 'windows-latest' && matrix.java == 'jdk17'
         run: docker compose -f docker/Windows-JDK17/compose.yaml up --build --exit-code-from cantaloupe
diff --git a/docker/Linux-GraalVM20/Dockerfile b/docker/Linux-GraalVM-JDK21/Dockerfile
similarity index 81%
rename from docker/Linux-GraalVM20/Dockerfile
rename to docker/Linux-GraalVM-JDK21/Dockerfile
index e73870eb9..b04284b0f 100644
--- a/docker/Linux-GraalVM20/Dockerfile
+++ b/docker/Linux-GraalVM-JDK21/Dockerfile
@@ -1,8 +1,8 @@
 FROM ubuntu:noble
 
-ENV JAVA_HOME=/opt/graalvm-ce-java11-20.3.0
-ENV GRAALVM_HOME=/opt/graalvm-ce-java11-20.3.0
-ENV PATH=$PATH:/opt/graalvm-ce-java11-20.3.0/bin
+ENV JAVA_HOME=/opt/graalvm-community-openjdk-21.0.2+13.1
+ENV GRAALVM_HOME=/opt/graalvm-community-openjdk-21.0.2+13.1
+ENV PATH=$PATH:/opt/graalvm-community-openjdk-21.0.2+13.1/bin
 
 ARG DEBIAN_FRONTEND=noninteractive
 
@@ -39,9 +39,9 @@ COPY dist/deps/Linux-x86-64/lib/* /usr/lib/
 #    && dpkg -i ./libgrokj2k1_7.6.5-1_amd64.deb \
 
 # Install GraalVM
-RUN wget -q https://github.com/graalvm/graalvm-ce-builds/releases/download/vm-20.3.0/graalvm-ce-java11-linux-amd64-20.3.0.tar.gz \
-  && tar xfz graalvm-ce-java11-linux-amd64-20.3.0.tar.gz \
-  && mv graalvm-ce-java11-20.3.0 /opt
+RUN wget -q https://github.com/graalvm/graalvm-ce-builds/releases/download/jdk-21.0.2/graalvm-community-jdk-21.0.2_linux-x64_bin.tar.gz \
+  && tar xfz graalvm-community-jdk-21.0.2_linux-x64_bin.tar.gz \
+  && mv graalvm-community-openjdk-21.0.2+13.1 /opt
 
 # A non-root user is needed for some FilesystemSourceTest tests to work.
 ARG user=cantaloupe
diff --git a/docker/Linux-GraalVM20/compose.yaml b/docker/Linux-GraalVM-JDK21/compose.yaml
similarity index 87%
rename from docker/Linux-GraalVM20/compose.yaml
rename to docker/Linux-GraalVM-JDK21/compose.yaml
index 210ac32d4..07b6db732 100644
--- a/docker/Linux-GraalVM20/compose.yaml
+++ b/docker/Linux-GraalVM-JDK21/compose.yaml
@@ -8,7 +8,7 @@ services:
   cantaloupe:
     build:
       context: ../../
-      dockerfile: $PWD/docker/Linux-GraalVM20/Dockerfile
+      dockerfile: $PWD/docker/Linux-GraalVM-JDK21/Dockerfile
   minio:
     image: minio/minio
     environment: