diff --git a/source/connection_manager.c b/source/connection_manager.c
index 06007005..6eda75b5 100644
--- a/source/connection_manager.c
+++ b/source/connection_manager.c
@@ -740,6 +740,8 @@ static void s_aws_http_connection_manager_finish_destroy(struct aws_http_connect
         aws_mem_release(manager->allocator, manager->cull_task);
     }
 
+    aws_event_loop_group_release_from_event_loop(manager->cull_event_loop);
+
     aws_mutex_clean_up(&manager->lock);
 
     aws_client_bootstrap_release(manager->bootstrap);
@@ -852,6 +854,8 @@ static void s_schedule_culling(struct aws_http_connection_manager *manager) {
 
     if (manager->cull_event_loop == NULL) {
         manager->cull_event_loop = aws_event_loop_group_get_next_loop(manager->bootstrap->event_loop_group);
+        // Acquire the event loop group to make sure it doesn't get destroyed while we are using the event loop.
+        aws_event_loop_group_acquire_from_event_loop(manager->cull_event_loop);
     }
     AWS_FATAL_ASSERT(manager->cull_event_loop != NULL);
 
diff --git a/source/http2_stream_manager.c b/source/http2_stream_manager.c
index 9cd9a952..96e90586 100644
--- a/source/http2_stream_manager.c
+++ b/source/http2_stream_manager.c
@@ -295,6 +295,7 @@ static void s_finish_pending_stream_acquisitions_task(struct aws_task *task, voi
         stream_manager, &pending_stream_acquisitions, AWS_ERROR_HTTP_STREAM_MANAGER_SHUTTING_DOWN);
     aws_mem_release(stream_manager->allocator, task);
     s_aws_http2_stream_manager_execute_transaction(&work);
+    aws_event_loop_group_release_from_event_loop(stream_manager->finish_pending_stream_acquisitions_task_event_loop);
 }
 
 /* helper function for building the transaction: how many new connections we should request */
@@ -379,6 +380,10 @@ static void s_aws_http2_stream_manager_build_transaction_synced(struct aws_http2
             /* schedule a task to finish the pending acquisitions if there doesn't have one and needed */
             stream_manager->finish_pending_stream_acquisitions_task_event_loop =
                 aws_event_loop_group_get_next_loop(stream_manager->bootstrap->event_loop_group);
+            /* Acquire a refcount for the task , released when task finished
+             * s_finish_pending_stream_acquisitions_task */
+            aws_event_loop_group_acquire_from_event_loop(
+                stream_manager->finish_pending_stream_acquisitions_task_event_loop);
             struct aws_task *finish_pending_stream_acquisitions_task =
                 aws_mem_calloc(stream_manager->allocator, 1, sizeof(struct aws_task));
             aws_task_init(