diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 495e9c9a..92d67f63 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,6 +11,8 @@ jobs:
         smalltalk: [ Pharo64-12, Pharo64-11, Pharo64-10, Pharo64-9.0, Pharo64-8.0, Pharo64-7.0, GemStone64-3.7.0, GemStone64-3.6.6, GemStone64-3.5.7, Squeak64-5.3 ]
         experimental: [ false ]
         include:
+          - smalltalk: Pharo64-13
+            experimental: true
           - smalltalk: Squeak64-6.0
             experimental: true
     continue-on-error: ${{ matrix.experimental }}