diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 06b925c..e1d8df1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -94,7 +94,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.13", "3.13t"]
+        python-version: ["3.13", "3.13t", "graalpy-24.2"]
 
     env:
       RUNS_ON: ubuntu-latest
@@ -261,6 +261,10 @@ jobs:
         manylinux: [auto]
         include:
           # manylinux for various platforms
+          - os: linux
+            manylinux: auto
+            target: x86_64
+            interpreter: 3.9 3.10 3.11 3.12 3.13 3.14 graalpy3.11
           - os: linux
             manylinux: auto
             target: i686
@@ -331,6 +335,7 @@ jobs:
           args: --release --out dist --interpreter ${{ matrix.interpreter || '3.9 3.10 3.11 3.12 3.13 3.14' }}
           rust-toolchain: stable
           working-directory: crates/jiter-python
+          before-script-linux: ${{ contains(matrix.interpreter, 'graalpy') && 'manylinux-interpreters ensure-all' || '' }}
 
       - run: ${{ (matrix.os == 'windows' && 'dir') || 'ls -lh' }} crates/jiter-python/dist/
 
diff --git a/crates/jiter-python/pyproject.toml b/crates/jiter-python/pyproject.toml
index 09f6736..402a99f 100644
--- a/crates/jiter-python/pyproject.toml
+++ b/crates/jiter-python/pyproject.toml
@@ -22,6 +22,8 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Programming Language :: Python :: Implementation :: GraalPy",
     "Intended Audience :: Developers",
     "Intended Audience :: Information Technology",
     "Intended Audience :: System Administrators",