diff --git a/cmd/txgen/docker/Dockerfile b/cmd/txgen/docker/Dockerfile
index 3bf08e249..82ef6f898 100644
--- a/cmd/txgen/docker/Dockerfile
+++ b/cmd/txgen/docker/Dockerfile
@@ -1,5 +1,5 @@
 # -- multistage docker build: stage #1: build stage
-FROM golang:1.12-alpine AS build
+FROM golang:1.13-alpine AS build
 
 RUN mkdir -p /go/src/github.com/daglabs/btcd
 
@@ -7,10 +7,6 @@ WORKDIR /go/src/github.com/daglabs/btcd
 
 RUN apk add --no-cache curl git
 
-# GO111MODULE=on forces Go to use the go-module system
-# TODO: remove this once Go 1.13 is released
-ENV GO111MODULE=on
-
 COPY go.mod .
 COPY go.sum .
 
diff --git a/dnsseeder/README.md b/dnsseeder/README.md
index 347a8c72f..cbe9145d5 100644
--- a/dnsseeder/README.md
+++ b/dnsseeder/README.md
@@ -23,19 +23,9 @@ Building or updating from source requires the following build dependencies:
 
 - **Vgo (Go 1.10 only)**
 
-  The `GO111MODULE` experiment is used to manage project dependencies and
-  provide reproducible builds.  The module experiment is provided by the Go 1.11
-  toolchain, but the Go 1.10 toolchain does not provide any module support.  To
-  perform module-aware builds with Go 1.10,
-  [vgo](https://godoc.org/golang.org/x/vgo) (a drop-in replacement for the go
-  command) must be used instead.
-
 To build and install from a checked-out repo, run `go install` in the repo's
 root directory.  Some notes:
 
-* Set the `GO111MODULE=on` environment variable if using Go 1.11 and building
-  from within `GOPATH`.
-
 * Replace `go` with `vgo` when using Go 1.10.
 
 * The `dnsseeder` executable will be installed to `$GOPATH/bin`.  `GOPATH`
diff --git a/dnsseeder/docker/Dockerfile b/dnsseeder/docker/Dockerfile
index 0bfdc6a3e..c5125ae1b 100644
--- a/dnsseeder/docker/Dockerfile
+++ b/dnsseeder/docker/Dockerfile
@@ -1,5 +1,5 @@
 # -- multistage docker build: stage #1: build stage
-FROM golang:1.12-alpine AS build
+FROM golang:1.13-alpine AS build
 
 RUN mkdir -p /go/src/github.com/daglabs/btcd
 
@@ -12,10 +12,6 @@ RUN go get -u golang.org/x/lint/golint \
       github.com/opennota/check/cmd/structcheck \
       github.com/opennota/check/cmd/varcheck
 
-# GO111MODULE=on forces Go to use the go-module system
-# TODO: remove this once Go 1.13 is released
-ENV GO111MODULE=on
-
 COPY go.mod .
 COPY go.sum .
 
diff --git a/docker/Dockerfile b/docker/Dockerfile
index a6a470c5a..a60cb453c 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,5 +1,5 @@
 # -- multistage docker build: stage #1: build stage
-FROM golang:1.12-alpine AS build
+FROM golang:1.13-alpine AS build
 
 RUN mkdir -p /go/src/github.com/daglabs/btcd
 
@@ -12,10 +12,6 @@ RUN go get -u golang.org/x/lint/golint \
       github.com/opennota/check/cmd/structcheck \
       github.com/opennota/check/cmd/varcheck
 
-# GO111MODULE=on forces Go to use the go-module system
-# TODO: remove this once Go 1.13 is released
-ENV GO111MODULE=on
-
 COPY go.mod .
 COPY go.sum .
 
diff --git a/docker/Dockerfile.dev b/docker/Dockerfile.dev
index 87988457c..3799cef24 100644
--- a/docker/Dockerfile.dev
+++ b/docker/Dockerfile.dev
@@ -1,4 +1,4 @@
-FROM golang:1.12-alpine 
+FROM golang:1.13-alpine 
 
 ENV PATH="${GOPATH}/bin:${PATH}"
 
@@ -12,10 +12,6 @@ RUN apk add --no-cache libc6-compat
 
 RUN go get github.com/derekparker/delve/cmd/dlv
 
-# GO111MODULE=on forces Go to use the go-module system
-# TODO: remove this once Go 1.13 is released
-ENV GO111MODULE=on
-
 COPY go.mod .
 COPY go.sum .
 
diff --git a/mining/simulator/docker/Dockerfile b/mining/simulator/docker/Dockerfile
index c5fb7fe98..2cb37ddb9 100644
--- a/mining/simulator/docker/Dockerfile
+++ b/mining/simulator/docker/Dockerfile
@@ -1,5 +1,5 @@
 # -- multistage docker build: stage #1: build stage
-FROM golang:1.12-alpine AS build
+FROM golang:1.13-alpine AS build
 
 RUN mkdir -p /go/src/github.com/daglabs/btcd
 
@@ -7,10 +7,6 @@ WORKDIR /go/src/github.com/daglabs/btcd
 
 RUN apk add --no-cache curl git
 
-# GO111MODULE=on forces Go to use the go-module system
-# TODO: remove this once Go 1.13 is released
-ENV GO111MODULE=on
-
 COPY go.mod .
 COPY go.sum .