diff --git a/kontor-javalin/Containerfile b/kontor-javalin/Containerfile
index 7f94301..1ba141b 100644
--- a/kontor-javalin/Containerfile
+++ b/kontor-javalin/Containerfile
@@ -9,7 +9,7 @@ COPY ./gradle/libs.versions.toml ./gradle/
 RUN gradle build --no-daemon
 
 # ----------------------------------------------------------------------- #
-FROM alpine/java:21-jre AS run
+FROM docker.io/alpine/java:21-jre AS run
 
 RUN apk --no-cache add curl
 
diff --git a/kontor-spring/Containerfile b/kontor-spring/Containerfile
index 095f6f0..a1052ce 100644
--- a/kontor-spring/Containerfile
+++ b/kontor-spring/Containerfile
@@ -10,7 +10,7 @@ COPY ./gradle/libs.versions.toml ./gradle/
 RUN gradle bootJar --no-daemon
 
 # ----------------------------------------------------------------------- #
-FROM alpine/java:21-jdk AS run
+FROM docker.io/alpine/java:21-jdk AS run
 
 RUN mkdir -p /logs