diff --git a/Dockerfile b/Dockerfile
index 370a221..3841c14 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG ALPINE_VER="3.11"
+ARG ALPINE_VER="3.12"
 FROM lsiobase/alpine:${ALPINE_VER} as fetch-stage
 
 ############## fetch stage ##############
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index a9150e4..6058073 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,4 +1,4 @@
-ARG ALPINE_VER="3.11"
+ARG ALPINE_VER="3.12"
 FROM lsiobase/alpine:arm64v8-${ALPINE_VER} as fetch-stage
 
 ############## fetch stage ##############
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index e548ee0..5551738 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -1,4 +1,4 @@
-ARG ALPINE_VER="3.11"
+ARG ALPINE_VER="3.12"
 FROM lsiobase/alpine:arm32v7-${ALPINE_VER} as fetch-stage
 
 ############## fetch stage ##############