diff --git a/15/jdk/alpine/Dockerfile b/15/jdk/alpine/Dockerfile
index 3058d0ec..566797a1 100644
--- a/15/jdk/alpine/Dockerfile
+++ b/15/jdk/alpine/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.11
+FROM alpine:3.12
 
 RUN apk add --no-cache java-cacerts
 
diff --git a/16/jdk/alpine/Dockerfile b/16/jdk/alpine/Dockerfile
index 04c840e2..2fa9cf7e 100644
--- a/16/jdk/alpine/Dockerfile
+++ b/16/jdk/alpine/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.11
+FROM alpine:3.12
 
 RUN apk add --no-cache java-cacerts
 
diff --git a/Dockerfile-oracle-alpine.template b/Dockerfile-oracle-alpine.template
index b065fbf4..fe6730ec 100644
--- a/Dockerfile-oracle-alpine.template
+++ b/Dockerfile-oracle-alpine.template
@@ -1,4 +1,4 @@
-FROM alpine:3.11
+FROM alpine:3.12
 
 RUN apk add --no-cache java-cacerts