diff --git a/mybinder/templates/buildkit-pruner.yaml b/mybinder/templates/buildkit-pruner.yaml
new file mode 100644
index 000000000..de016a6f8
--- /dev/null
+++ b/mybinder/templates/buildkit-pruner.yaml
@@ -0,0 +1,34 @@
+{{ if .Values.buildkitPruner.enabled }}
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: build-cache-prune
+spec:
+  schedule: {{ .Values.buildkitPruner.schedule | quote }}
+  # If the previous run is still going, replace it with our new one
+  concurrencyPolicy: Replace
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          restartPolicy: OnFailure
+          volumes:
+          - name: dind-socket
+            hostPath:
+              path: /var/run/dind/docker.sock
+          containers:
+          - name: pruner
+            image: {{ .Values.buildkitPruner.image }}
+            env:
+              - name: DOCKER_HOST
+                value: "unix:///var/run/dind/docker.sock"
+            command:
+            - /bin/sh
+            - -c
+            - |
+              docker builder prune --force --all --keep-storage={{ .Values.buildkitPruner.buildkitCacheSize }} && \
+              docker system df
+            volumeMounts:
+            - name: dind-socket
+              mountPath: /var/run/dind/docker.sock
+{{- end }}
diff --git a/mybinder/values.yaml b/mybinder/values.yaml
index 06128fb5b..387db72ac 100644
--- a/mybinder/values.yaml
+++ b/mybinder/values.yaml
@@ -1,4 +1,3 @@
-# values ref: https://github.com/yuvipanda/cryptnono/blob/main/cryptnono/values.yaml
 cryptnono:
   enabled: true
   detectors:
@@ -10,6 +9,14 @@ cryptnono:
       containerdHostPath: /run/containerd/containerd.sock
       dockerHostPath: /run/dind/docker.sock
 
+buildkitPruner:
+  enabled: true
+  # Use the same image as we use for dind
+  image: docker:27.5.1-dind
+  buildkitCacheSize: 300GB
+  # Run this every 30min
+  schedule: "*/30 * * * *"
+
 registry:
   enabled: false
   replicas: 2