diff --git a/internal/junitxml/report.go b/internal/junitxml/report.go
index d679a8cc..703ed619 100644
--- a/internal/junitxml/report.go
+++ b/internal/junitxml/report.go
@@ -66,6 +66,8 @@ type JUnitFailure struct {
 type Config struct {
 	FormatTestSuiteName     FormatFunc
 	FormatTestCaseClassname FormatFunc
+	// This is used for tests to have a consistent timestamp
+	customTimestamp string
 }
 
 // FormatFunc converts a string from one format into another.
@@ -93,7 +95,10 @@ func generate(exec *testjson.Execution, cfg Config) JUnitTestSuites {
 			Properties: packageProperties(version),
 			TestCases:  packageTestCases(pkg, cfg.FormatTestCaseClassname),
 			Failures:   len(pkg.Failed),
-			Timestamp:  exec.Started().Format(time.RFC3339),
+			Timestamp:  cfg.customTimestamp,
+		}
+		if cfg.customTimestamp == "" {
+			junitpkg.Timestamp = exec.Started().Format(time.RFC3339)
 		}
 		suites.Suites = append(suites.Suites, junitpkg)
 	}
diff --git a/internal/junitxml/report_test.go b/internal/junitxml/report_test.go
index d1240dd3..056588da 100644
--- a/internal/junitxml/report_test.go
+++ b/internal/junitxml/report_test.go
@@ -7,6 +7,7 @@ import (
 	"io/ioutil"
 	"runtime"
 	"testing"
+	"time"
 
 	"gotest.tools/gotestsum/testjson"
 	"gotest.tools/v3/assert"
@@ -19,7 +20,7 @@ func TestWrite(t *testing.T) {
 	exec := createExecution(t)
 
 	defer env.Patch(t, "GOVERSION", "go7.7.7")()
-	err := Write(out, exec, Config{})
+	err := Write(out, exec, Config{customTimestamp: new(time.Time).Format(time.RFC3339)})
 	assert.NilError(t, err)
 	golden.Assert(t, out.String(), "junitxml-report.golden")
 }
diff --git a/internal/junitxml/testdata/junitxml-report.golden b/internal/junitxml/testdata/junitxml-report.golden
index de9a4f17..7f10842c 100644
--- a/internal/junitxml/testdata/junitxml-report.golden
+++ b/internal/junitxml/testdata/junitxml-report.golden
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <testsuites>
-	<testsuite tests="0" failures="0" time="0.000000" name="github.com/gotestyourself/gotestyourself/testjson/internal/badmain">
+	<testsuite tests="0" failures="0" time="0.000000" name="github.com/gotestyourself/gotestyourself/testjson/internal/badmain" timestamp="0001-01-01T00:00:00Z">
 		<properties>
 			<property name="go.version" value="go7.7.7"></property>
 		</properties>
@@ -8,7 +8,7 @@
 			<failure message="Failed" type="">sometimes main can exit 2&#xA;FAIL&#x9;github.com/gotestyourself/gotestyourself/testjson/internal/badmain&#x9;0.010s&#xA;</failure>
 		</testcase>
 	</testsuite>
-	<testsuite tests="18" failures="0" time="0.020000" name="github.com/gotestyourself/gotestyourself/testjson/internal/good">
+	<testsuite tests="18" failures="0" time="0.020000" name="github.com/gotestyourself/gotestyourself/testjson/internal/good" timestamp="0001-01-01T00:00:00Z">
 		<properties>
 			<property name="go.version" value="go7.7.7"></property>
 		</properties>
@@ -35,7 +35,7 @@
 		<testcase classname="github.com/gotestyourself/gotestyourself/testjson/internal/good" name="TestParallelTheSecond" time="0.010000"></testcase>
 		<testcase classname="github.com/gotestyourself/gotestyourself/testjson/internal/good" name="TestParallelTheFirst" time="0.010000"></testcase>
 	</testsuite>
-	<testsuite tests="28" failures="4" time="0.020000" name="github.com/gotestyourself/gotestyourself/testjson/internal/stub">
+	<testsuite tests="28" failures="4" time="0.020000" name="github.com/gotestyourself/gotestyourself/testjson/internal/stub" timestamp="0001-01-01T00:00:00Z">
 		<properties>
 			<property name="go.version" value="go7.7.7"></property>
 		</properties>
@@ -80,7 +80,7 @@
 		<testcase classname="github.com/gotestyourself/gotestyourself/testjson/internal/stub" name="TestParallelTheSecond" time="0.010000"></testcase>
 		<testcase classname="github.com/gotestyourself/gotestyourself/testjson/internal/stub" name="TestParallelTheFirst" time="0.010000"></testcase>
 	</testsuite>
-	<testsuite tests="0" failures="0" time="0.000000" name="gotest.tools/gotestsum/internal/empty">
+	<testsuite tests="0" failures="0" time="0.000000" name="gotest.tools/gotestsum/internal/empty" timestamp="0001-01-01T00:00:00Z">
 		<properties>
 			<property name="go.version" value="go7.7.7"></property>
 		</properties>