diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 59424998..54ab606c 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -35,7 +35,7 @@ owners to license your work under the terms of the [MIT License](LICENSE).
 
 Requirements:
 
-- `go` v1.12+
+- `go` v1.14+
 - environment variable: `GO111MODULE=on`
 
 First, you have to install [GoLang](https://golang.org/doc/install) and [golangci-lint](https://github.com/golangci/golangci-lint#install).
diff --git a/docs/content/installation/_index.md b/docs/content/installation/_index.md
index 52273eaa..c2b3dffb 100644
--- a/docs/content/installation/_index.md
+++ b/docs/content/installation/_index.md
@@ -42,7 +42,7 @@ pkg install lego
 
 Requirements:
 
-- `go` v1.12+
+- `go` v1.14+
 - environment variable: `GO111MODULE=on`
 
 To install the latest development version from sources, just run:
@@ -50,3 +50,11 @@ To install the latest development version from sources, just run:
 ```bash
 go get -u github.com/go-acme/lego/v3/cmd/lego
 ```
+
+or
+
+```bash
+git clone git@github.com:go-acme/lego.git
+make        # tests + doc + build
+make build  # only build
+```