diff --git a/src/Dockerfile b/src/Dockerfile
index e4ced6bc..dc1e7788 100644
--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -34,7 +34,9 @@ RUN apk add --no-cache \
     tini \
     tzdata \
     unzip \
-    wget
+    wget && \
+    # Install grep to avoid issues in pihole -w/b with the default busybox grep
+    apk add --no-cache --upgrade grep
 
 ADD https://ftl.pi-hole.net/macvendor.db /macvendor.db
 COPY crontab.txt /crontab.txt