diff --git a/paymentsheet/src/main/java/com/stripe/android/common/model/CommonConfiguration.kt b/paymentsheet/src/main/java/com/stripe/android/common/model/CommonConfiguration.kt
index 80df4ec7da1..0d5fdd0030f 100644
--- a/paymentsheet/src/main/java/com/stripe/android/common/model/CommonConfiguration.kt
+++ b/paymentsheet/src/main/java/com/stripe/android/common/model/CommonConfiguration.kt
@@ -231,7 +231,8 @@ private fun String.isEKClientSecretValid(): Boolean {
     return Regex(EK_CLIENT_SECRET_VALID_REGEX_PATTERN).matches(this)
 }
 
-private const val EK_CLIENT_SECRET_VALID_REGEX_PATTERN = "^ek_[^_](.)+$"
+// The `uk_` prefix is used by the Stripe Dashboard Mobile App for MOTO
+private const val EK_CLIENT_SECRET_VALID_REGEX_PATTERN = "^(ek_|uk_)[^_](.)+\$"
 
 internal fun CommonConfiguration.containsVolatileDifferences(
     other: CommonConfiguration
diff --git a/paymentsheet/src/test/java/com/stripe/android/paymentsheet/PaymentSheetConfigurationKtxTest.kt b/paymentsheet/src/test/java/com/stripe/android/paymentsheet/PaymentSheetConfigurationKtxTest.kt
index 96365fb21a7..cf0315f7ba7 100644
--- a/paymentsheet/src/test/java/com/stripe/android/paymentsheet/PaymentSheetConfigurationKtxTest.kt
+++ b/paymentsheet/src/test/java/com/stripe/android/paymentsheet/PaymentSheetConfigurationKtxTest.kt
@@ -44,6 +44,8 @@ class PaymentSheetConfigurationKtxTest {
     fun `'validate' should succeed when ephemeral key secret is of correct format`() {
         getConfig("ek_askljdlkasfhgasdfjls").validate(isLiveMode = false)
         getConfig("ek_test_iiuwfhdaiuhasdvkcjn32n").validate(isLiveMode = false)
+        getConfig("uk_iiuwfhdaiuhasdvkcjn32n").validate(isLiveMode = false)
+        getConfig("uk_test_iiuwfhdaiuhasdvkcjn32n").validate(isLiveMode = false)
     }
 
     @Test