diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60b496dc..26f03214 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,15 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres
 to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Deprecated
+
+* Deprecated PIS / Unzer Bank Transfer payment type (`com.unzer.payment.paymenttypes.Pis`)
+  and the corresponding `PaymentTypeEnum.PIS` constant. This does **not** affect the separate
+  Open Banking payment type (`com.unzer.payment.paymenttypes.OpenBanking` /
+  `PaymentTypeEnum.OPEN_BANKING`), which remains fully supported.
+
 ## [5.9.0](https://github.com/unzerdev/java-sdk/compare/5.8.2..5.9.0)
 
 ### Added
diff --git a/src/main/java/com/unzer/payment/paymenttypes/PaymentTypeEnum.java b/src/main/java/com/unzer/payment/paymenttypes/PaymentTypeEnum.java
index 641eaf86..504a1769 100644
--- a/src/main/java/com/unzer/payment/paymenttypes/PaymentTypeEnum.java
+++ b/src/main/java/com/unzer/payment/paymenttypes/PaymentTypeEnum.java
@@ -26,6 +26,7 @@ public enum PaymentTypeEnum {
     @Deprecated
     SEPA_DIRECT_DEBIT_SECURED("dds"),
     SOFORT("sft"),
+    @Deprecated
     PIS("pis"),
     ALIPAY("ali"),
     WECHATPAY("wcp"),
diff --git a/src/main/java/com/unzer/payment/paymenttypes/Pis.java b/src/main/java/com/unzer/payment/paymenttypes/Pis.java
index 710afeab..3f6e15ec 100644
--- a/src/main/java/com/unzer/payment/paymenttypes/Pis.java
+++ b/src/main/java/com/unzer/payment/paymenttypes/Pis.java
@@ -12,10 +12,12 @@
 import java.util.Currency;
 
 /**
- * Paypal business object
+ * Pis business object
  *
  * @author Unzer E-Com GmbH
+ * @deprecated PIS (Unzer Bank Transfer) payment type is no longer supported and will be removed in a future version.
  */
+@Deprecated
 public class Pis extends BasePaymentType {
 
     private String iban;
diff --git a/src/test/java/com/unzer/payment/integration/paymenttypes/PisTest.java b/src/test/java/com/unzer/payment/integration/paymenttypes/PisTest.java
deleted file mode 100644
index 5271461c..00000000
--- a/src/test/java/com/unzer/payment/integration/paymenttypes/PisTest.java
+++ /dev/null
@@ -1,73 +0,0 @@
-package com.unzer.payment.integration.paymenttypes;
-
-
-import com.unzer.payment.Charge;
-import com.unzer.payment.Unzer;
-import com.unzer.payment.business.AbstractPaymentTest;
-import com.unzer.payment.paymenttypes.Pis;
-import org.junit.jupiter.api.Disabled;
-import org.junit.jupiter.api.Test;
-
-import java.math.BigDecimal;
-import java.util.Currency;
-
-import static com.unzer.payment.util.Types.unsafeUrl;
-import static org.junit.jupiter.api.Assertions.assertNotNull;
-
-class PisTest extends AbstractPaymentTest {
-
-    @Test
-    void testCreatePis() {
-        Pis pis = new Pis();
-        pis = getUnzer().createPaymentType(pis);
-        assertNotNull(pis.getId());
-    }
-
-    @Test
-    void testCreatePisWithIbanBic() {
-        Pis pis = new Pis("DE69545100670661762678", "SPFKAT2BXXX");
-        pis = getUnzer().createPaymentType(pis);
-        assertNotNull(pis.getId());
-        assertNotNull(pis.getIban());
-        assertNotNull(pis.getBic());
-
-        Pis fetchedPis = (Pis) getUnzer().fetchPaymentType(pis.getId());
-        assertNotNull(fetchedPis.getId());
-        assertNotNull(fetchedPis.getIban());
-        assertNotNull(fetchedPis.getBic());
-    }
-
-    @Test
-    @Disabled("Unspecified (Technical)")
-    public void testAuthorizeType() {
-        Unzer unzer = getUnzer();
-        Pis pis = unzer.createPaymentType(new Pis());
-        Charge charge = unzer.charge(
-                BigDecimal.ONE,
-                Currency.getInstance("EUR"),
-                pis.getId(),
-                unsafeUrl("https://www.meinShop.de")
-        );
-        assertNotNull(charge);
-        assertNotNull(charge.getId());
-        assertNotNull(charge.getRedirectUrl());
-    }
-
-    @Test
-    void testFetchPisType() {
-        Pis pis = getUnzer().createPaymentType(new Pis());
-        assertNotNull(pis.getId());
-        Pis fetchedPis = (Pis) getUnzer().fetchPaymentType(pis.getId());
-        assertNotNull(fetchedPis.getId());
-    }
-
-    @Test
-    @Disabled("AHC-3615 PIS holder not in response when doing a POST/GET")
-    public void testFetchPisTypeWithHolderBicIban() {
-        Pis fetchedPis = (Pis) getUnzer().fetchPaymentType("s-pis-ivt4ibypi0zk");
-        assertNotNull(fetchedPis.getId());
-        assertNotNull(fetchedPis.getIban());
-        assertNotNull(fetchedPis.getBic());
-        assertNotNull(fetchedPis.getHolder());
-    }
-}
diff --git a/src/test/java/com/unzer/payment/integration/paymenttypes/SofortTest.java b/src/test/java/com/unzer/payment/integration/paymenttypes/SofortTest.java
deleted file mode 100644
index f1e3d809..00000000
--- a/src/test/java/com/unzer/payment/integration/paymenttypes/SofortTest.java
+++ /dev/null
@@ -1,42 +0,0 @@
-package com.unzer.payment.integration.paymenttypes;
-
-
-import com.unzer.payment.Charge;
-import com.unzer.payment.business.AbstractPaymentTest;
-import com.unzer.payment.paymenttypes.Sofort;
-import org.junit.jupiter.api.Disabled;
-import org.junit.jupiter.api.Test;
-
-import java.math.BigDecimal;
-import java.util.Currency;
-
-import static com.unzer.payment.util.Types.unsafeUrl;
-import static org.junit.jupiter.api.Assertions.assertNotNull;
-
-class SofortTest extends AbstractPaymentTest {
-
-    @Test
-    void testCreateSofortManatoryType() {
-        Sofort sofort = new Sofort();
-        sofort = getUnzer().createPaymentType(sofort);
-        assertNotNull(sofort.getId());
-    }
-
-    @Test
-    @Disabled("does not work on PAPI")
-    public void testChargeSofortType() {
-        Sofort sofort = getUnzer().createPaymentType(new Sofort());
-        Charge charge = sofort.charge(BigDecimal.ONE, Currency.getInstance("EUR"), unsafeUrl("https://www.unzer.com"));
-        assertNotNull(charge);
-        assertNotNull(charge.getId());
-        assertNotNull(charge.getRedirectUrl());
-    }
-
-    @Test
-    void testFetchSofortType() {
-        Sofort sofort = getUnzer().createPaymentType(new Sofort());
-        assertNotNull(sofort.getId());
-        Sofort fetchedSofort = (Sofort) getUnzer().fetchPaymentType(sofort.getId());
-        assertNotNull(fetchedSofort.getId());
-    }
-}
diff --git a/src/test/resources/junit-platform.properties b/src/test/resources/junit-platform.properties
index 07bf940e..b1329fb9 100644
--- a/src/test/resources/junit-platform.properties
+++ b/src/test/resources/junit-platform.properties
@@ -1,2 +1,5 @@
 junit.jupiter.execution.parallel.enabled=true
-junit.jupiter.execution.parallel.mode.default=concurrent
\ No newline at end of file
+# Test classes must not run concurrently: 12 of them share a WireMock server on the
+# fixed port 8080 (@WireMockTest(httpPort = 8080)), so concurrent classes race to bind
+# it and all but the first fail with "Failed to bind to /0.0.0.0:8080".
+junit.jupiter.execution.parallel.mode.default=same_thread