diff --git a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/io/PoolingHttpClientConnectionManager.java b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/io/PoolingHttpClientConnectionManager.java
index 6d8ccea485..c16eddce0c 100644
--- a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/io/PoolingHttpClientConnectionManager.java
+++ b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/io/PoolingHttpClientConnectionManager.java
@@ -70,6 +70,7 @@
 import org.apache.hc.core5.http.protocol.HttpContext;
 import org.apache.hc.core5.io.CloseMode;
 import org.apache.hc.core5.pool.ConnPoolControl;
+import org.apache.hc.core5.pool.DefaultDisposalCallback;
 import org.apache.hc.core5.pool.LaxConnPool;
 import org.apache.hc.core5.pool.ManagedConnPool;
 import org.apache.hc.core5.pool.PoolConcurrencyPolicy;
@@ -223,6 +224,7 @@ public PoolingHttpClientConnectionManager(
                         DEFAULT_MAX_TOTAL_CONNECTIONS,
                         timeToLive,
                         poolReusePolicy,
+                        new DefaultDisposalCallback<>(),
                         null) {
 
                     @Override
diff --git a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/nio/PoolingAsyncClientConnectionManager.java b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/nio/PoolingAsyncClientConnectionManager.java
index 512276181d..90d3df916c 100644
--- a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/nio/PoolingAsyncClientConnectionManager.java
+++ b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/nio/PoolingAsyncClientConnectionManager.java
@@ -77,6 +77,7 @@
 import org.apache.hc.core5.http2.ssl.ApplicationProtocol;
 import org.apache.hc.core5.io.CloseMode;
 import org.apache.hc.core5.pool.ConnPoolControl;
+import org.apache.hc.core5.pool.DefaultDisposalCallback;
 import org.apache.hc.core5.pool.LaxConnPool;
 import org.apache.hc.core5.pool.ManagedConnPool;
 import org.apache.hc.core5.pool.PoolConcurrencyPolicy;
@@ -181,6 +182,7 @@ public PoolingAsyncClientConnectionManager(
                         DEFAULT_MAX_TOTAL_CONNECTIONS,
                         timeToLive,
                         poolReusePolicy,
+                        new DefaultDisposalCallback<>(),
                         null) {
 
                     @Override