diff --git a/CHANGELOG b/CHANGELOG
index 40d107e8c..e314d6ac4 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,10 @@
+2018-08-27
+
+    - 1.12.4
+    - Fix memory leak when engine is destroyed
+    - Fix memory leak in http_client
+    - Fix gcc warning in unit tests
+
 2018-08-22
 
     - 1.12.3
diff --git a/include/lsquic.h b/include/lsquic.h
index f028334fc..adfc33c2f 100644
--- a/include/lsquic.h
+++ b/include/lsquic.h
@@ -25,7 +25,7 @@ extern "C" {
 
 #define LSQUIC_MAJOR_VERSION 1
 #define LSQUIC_MINOR_VERSION 12
-#define LSQUIC_PATCH_VERSION 3
+#define LSQUIC_PATCH_VERSION 4
 
 /**
  * Engine flags:
diff --git a/src/liblsquic/lsquic_engine.c b/src/liblsquic/lsquic_engine.c
index 47fc08dcf..7cc5a366f 100644
--- a/src/liblsquic/lsquic_engine.c
+++ b/src/liblsquic/lsquic_engine.c
@@ -574,6 +574,7 @@ lsquic_engine_destroy (lsquic_engine_t *engine)
 
     assert(0 == lsquic_mh_count(&engine->conns_out));
     assert(0 == lsquic_mh_count(&engine->conns_tickable));
+    lsquic_mm_cleanup(&engine->pub.enp_mm);
     free(engine->conns_tickable.mh_elems);
     free(engine);
 }
diff --git a/test/http_client.c b/test/http_client.c
index a4b08291e..e7fce9992 100644
--- a/test/http_client.c
+++ b/test/http_client.c
@@ -306,6 +306,7 @@ display_cert_chain (lsquic_conn_t *conn)
         name = X509_get_subject_name(cert);
         LSQ_INFO("cert #%u: name: %s", i,
                             X509_NAME_oneline(name, buf, sizeof(buf)));
+        X509_free(cert);
     }
 
     sk_X509_free(chain);
@@ -712,5 +713,11 @@ main (int argc, char **argv)
     if (promise_fd >= 0)
         (void) close(promise_fd);
 
+    while ((pe = TAILQ_FIRST(&client_ctx.hcc_path_elems)))
+    {
+        TAILQ_REMOVE(&client_ctx.hcc_path_elems, pe, next_pe);
+        free(pe);
+    }
+
     exit(0 == s ? EXIT_SUCCESS : EXIT_FAILURE);
 }
diff --git a/test/unittests/test_di_nocopy.c b/test/unittests/test_di_nocopy.c
index 3a79f6c58..95e52abaa 100644
--- a/test/unittests/test_di_nocopy.c
+++ b/test/unittests/test_di_nocopy.c
@@ -281,8 +281,8 @@ run_di_nocopy_test (const struct nocopy_test *test)
     {
         data_frame = di->di_if->di_get_frame(di, nread);
         assert(data_frame);  /* Self-check */
-        n_to_read = test->read_until - nread > data_frame->df_size - data_frame->df_read_off
-                            ? data_frame->df_size - data_frame->df_read_off : test->read_until - nread;
+        n_to_read = test->read_until - nread > (unsigned) data_frame->df_size - data_frame->df_read_off
+                            ? (unsigned) data_frame->df_size - data_frame->df_read_off : test->read_until - nread;
         data_frame->df_read_off += n_to_read;
         nread += n_to_read;
         if (data_frame->df_read_off == data_frame->df_size)