diff --git a/testutils/source.go b/testutils/source.go
index 5794268..d76fdf6 100644
--- a/testutils/source.go
+++ b/testutils/source.go
@@ -1891,13 +1891,15 @@ import "crypto/rand"
 func main() {
 	good, _ := rand.Read(nil)
 	println(good)
-}`}, 0, gosec.NewConfig()}, {[]string{`
+}`}, 0, gosec.NewConfig()},
+		{[]string{`
 package main
 import "math/rand"
 func main() {
 	bad := rand.Int()
 	println(bad)
-}`}, 1, gosec.NewConfig()}, {[]string{`
+}`}, 1, gosec.NewConfig()},
+		{[]string{`
 package main
 import (
 	"crypto/rand"
@@ -1908,6 +1910,25 @@ func main() {
 	println(good)
 	bad := mrand.Int31()
 	println(bad)
+}`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+import (
+	"math/rand"
+)
+func main() {
+	gen := rand.New(rand.NewSource(10.4))
+	bad := gen.Int()
+	println(bad)
+}`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+import (
+	"math/rand"
+)
+func main() {
+	bad := rand.Intn(10)
+	println(bad)
 }`}, 1, gosec.NewConfig()}}
 
 	// SampleCodeG501 - Blacklisted import MD5