diff --git a/utbot-framework-test/src/test/kotlin/org/utbot/examples/strings/StringExamplesTest.kt b/utbot-framework-test/src/test/kotlin/org/utbot/examples/strings/StringExamplesTest.kt
index 94b4337230..6275940f52 100644
--- a/utbot-framework-test/src/test/kotlin/org/utbot/examples/strings/StringExamplesTest.kt
+++ b/utbot-framework-test/src/test/kotlin/org/utbot/examples/strings/StringExamplesTest.kt
@@ -251,6 +251,7 @@ internal class StringExamplesTest : UtValueTestCaseChecker(
     }
 
     @Test
+    @Disabled("Flaky on GitHub: https://github.com/UnitTestBot/UTBotJava/issues/1004")
     fun testIsValidUuid() {
         val pattern = Regex("[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}")
         check(