diff --git a/.circleci/config.yml b/.circleci/config.yml
index d03b502..947e408 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -4,7 +4,7 @@ executors:
   golang:
     working_directory: /go/src/ultre.me/smsify
     docker:
-      - image: circleci/golang:1.13
+      - image: circleci/golang:1.15
     environment:
       GO111MODULE: "on"
       DOCKER_IMAGE: ultreme/smsify
diff --git a/Dockerfile b/Dockerfile
index e2f5f43..1a4187f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ ARG             VCS_REF
 ARG             VERSION
 
 # build
-FROM golang:1.13-alpine as builder
+FROM golang:1.15-alpine as builder
 RUN             apk add --no-cache git gcc musl-dev make
 ENV             GO111MODULE=on
 WORKDIR         /go/src/ultre.me/smsify
@@ -14,7 +14,7 @@ COPY            . ./
 RUN             make install
 
 # minimalist runtime
-FROM            alpine:3.10
+FROM            alpine:3.12
 LABEL           org.label-schema.build-date=$BUILD_DATE \
                 org.label-schema.name="smsify" \
                 org.label-schema.description="" \