diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4ef3cb4e0..aa0bfc0e1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ Versioning](http://semver.org/spec/v2.0.0.html) except to the first release.
   also added logs for error case of `ConnectionPool.tryConnect()` calls in 
   `ConnectionPool.controller()` and `ConnectionPool.reconnect()`
 - Methods that are implemented but not included in the pooler interface (#395).
+- Implemented stringer methods for pool.Role (#405).
 
 ### Changed
 
diff --git a/pool/const.go b/pool/const.go
index 7ec239f7d..b1748ae52 100644
--- a/pool/const.go
+++ b/pool/const.go
@@ -1,3 +1,4 @@
+//go:generate stringer -type Role -linecomment
 package pool
 
 /*
@@ -31,7 +32,10 @@ const (
 type Role uint32
 
 const (
-	UnknownRole Role = iota // A connection pool failed to discover mode of the instance.
-	MasterRole              // The instance is read-write mode.
-	ReplicaRole             // The instance is in read-only mode.
+	// UnknownRole - the connection pool was unable to detect the instance mode.
+	UnknownRole Role = iota // unknown
+	// MasterRole - the instance is in read-write mode.
+	MasterRole // master
+	// ReplicaRole - the instance is in read-only mode.
+	ReplicaRole // replica
 )
diff --git a/pool/const_test.go b/pool/const_test.go
new file mode 100644
index 000000000..83e2678de
--- /dev/null
+++ b/pool/const_test.go
@@ -0,0 +1,13 @@
+package pool
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestRole_String(t *testing.T) {
+	require.Equal(t, "unknown", UnknownRole.String())
+	require.Equal(t, "master", MasterRole.String())
+	require.Equal(t, "replica", ReplicaRole.String())
+}
diff --git a/pool/role_string.go b/pool/role_string.go
new file mode 100644
index 000000000..162ebd698
--- /dev/null
+++ b/pool/role_string.go
@@ -0,0 +1,25 @@
+// Code generated by "stringer -type Role -linecomment"; DO NOT EDIT.
+
+package pool
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[UnknownRole-0]
+	_ = x[MasterRole-1]
+	_ = x[ReplicaRole-2]
+}
+
+const _Role_name = "unknownmasterreplica"
+
+var _Role_index = [...]uint8{0, 7, 13, 20}
+
+func (i Role) String() string {
+	if i >= Role(len(_Role_index)-1) {
+		return "Role(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _Role_name[_Role_index[i]:_Role_index[i+1]]
+}