diff --git a/pd-control.md b/pd-control.md
index 18ae5cd9706ac..464461fe214e5 100644
--- a/pd-control.md
+++ b/pd-control.md
@@ -11,8 +11,8 @@ As a command line tool of PD, PD Control obtains the state information of the cl
 
 ## Compile from source code
 
-1. [Go](https://golang.org/) Version 1.9 or later
-2. In the root directory of the [PD project](https://github.com/pingcap/pd), use the `make` command to compile and generate `bin/pd-ctl`
+1. [Go](https://golang.org/) Version 1.13 or later because the Go modules are used.
+2. In the root directory of the [PD project](https://github.com/pingcap/pd), use the `make` command to compile and generate `bin/pd-ctl`.
 
 > **Note:**
 >
diff --git a/pd-recover.md b/pd-recover.md
index 62bf567087e57..cb89af539a13e 100644
--- a/pd-recover.md
+++ b/pd-recover.md
@@ -11,8 +11,8 @@ PD Recover is a disaster recovery tool of PD, used to recover the PD cluster whi
 
 ## Source code compiling
 
-1. [Go](https://golang.org/) Version 1.9 or later
-2. In the root directory of the [PD project](https://github.com/pingcap/pd), use the `make` command to compile and generate `bin/pd-recover`
+1. [Go](https://golang.org/) Version 1.13 or later because the Go modules are used.
+2. In the root directory of the [PD project](https://github.com/pingcap/pd), use the `make` command to compile and generate `bin/pd-recover`.
 
 ## Usage