diff --git a/mockgen/mockgen.go b/mockgen/mockgen.go
index 50487070..0dc4acc4 100644
--- a/mockgen/mockgen.go
+++ b/mockgen/mockgen.go
@@ -31,6 +31,7 @@ import (
 	"os/exec"
 	"path"
 	"path/filepath"
+	"runtime/debug"
 	"sort"
 	"strconv"
 	"strings"
@@ -279,6 +280,18 @@ func (g *generator) Generate(pkg *model.Package, outputPkgName string, outputPac
 	} else {
 		g.p("// Source: %v (interfaces: %v)", g.srcPackage, g.srcInterfaces)
 	}
+	g.p("//")
+
+	g.p("// Generated by this command:")
+	invokedArgs := strings.Join(os.Args, " ")
+	g.p("//    %v", invokedArgs)
+
+	g.p("//")
+	if version != "" {
+		g.p("// Mockgen version: %s", version)
+	} else if bi, exists := debug.ReadBuildInfo(); exists {
+		g.p("// Mockgen version: %s", bi.Main.Version)
+	}
 	g.p("")
 
 	// Get all required imports, and generate unique names for them all.