diff --git a/CHANGELOG b/CHANGELOG
index 1cf6374..0caae22 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+2023-12-25
+    - 4.0.3
+    - Fix session resumption bug introduced in 4.0.2.
+
 2023-12-19
     - 4.0.2
     - More strict RFC compliance.
diff --git a/docs/conf.py b/docs/conf.py
index 92bf1bf..884acce 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -26,7 +26,7 @@ author = u'LiteSpeed Technologies'
 # The short X.Y version
 version = u'4.0'
 # The full version, including alpha/beta/rc tags
-release = u'4.0.2'
+release = u'4.0.3'
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/include/lsquic.h b/include/lsquic.h
index 6dcd979..45fbfc5 100644
--- a/include/lsquic.h
+++ b/include/lsquic.h
@@ -27,7 +27,7 @@ extern "C" {
 
 #define LSQUIC_MAJOR_VERSION 4
 #define LSQUIC_MINOR_VERSION 0
-#define LSQUIC_PATCH_VERSION 2
+#define LSQUIC_PATCH_VERSION 3
 
 /**
  * Engine flags:
diff --git a/src/liblsquic/lsquic_full_conn_ietf.c b/src/liblsquic/lsquic_full_conn_ietf.c
index cd9466b..04a2a03 100644
--- a/src/liblsquic/lsquic_full_conn_ietf.c
+++ b/src/liblsquic/lsquic_full_conn_ietf.c
@@ -7493,7 +7493,11 @@ process_regular_packet (struct ietf_full_conn *conn,
         conn->ifc_conn.cn_esf.i->esfi_set_iscid(conn->ifc_conn.cn_enc_session,
                                                                     packet_in);
     else if (pns == PNS_HSK)
+    {
+        if ((conn->ifc_flags & (IFC_SERVER | IFC_IGNORE_INIT)) == IFC_SERVER)
+            ignore_init(conn);
         lsquic_send_ctl_maybe_calc_rough_rtt(&conn->ifc_send_ctl, pns - 1);
+    }
 
     EV_LOG_PACKET_IN(LSQUIC_LOG_CONN_ID, packet_in);
 
diff --git a/src/liblsquic/lsquic_mini_conn_ietf.c b/src/liblsquic/lsquic_mini_conn_ietf.c
index 5881c79..3e08340 100644
--- a/src/liblsquic/lsquic_mini_conn_ietf.c
+++ b/src/liblsquic/lsquic_mini_conn_ietf.c
@@ -734,7 +734,7 @@ ietf_mini_conn_ci_hsk_done (struct lsquic_conn *lconn,
     {
     case LSQ_HSK_OK:
     case LSQ_HSK_RESUMED_OK:
-        conn->imc_flags |= IMC_HSK_OK | IMC_IGNORE_INIT;
+        conn->imc_flags |= IMC_HSK_OK;
         conn->imc_conn.cn_flags |= LSCONN_HANDSHAKE_DONE;
         LSQ_DEBUG("handshake OK");
         break;
diff --git a/src/liblsquic/lsquic_stream.c b/src/liblsquic/lsquic_stream.c
index e7b5178..4c2dda5 100644
--- a/src/liblsquic/lsquic_stream.c
+++ b/src/liblsquic/lsquic_stream.c
@@ -2408,7 +2408,10 @@ lsquic_stream_dispatch_write_events (lsquic_stream_t *stream)
     unsigned short n_buffered;
     enum stream_q_flags q_flags;
 
-    LSQ_DEBUG("dispatch_write_events");
+    LSQ_DEBUG("dispatch_write_events, sm_qflags: %d. stream_flags: %d, sm_bflags: %d, "
+                "max_send_off: %" PRIu64 ", tosend_off: %" PRIu64 ", sm_n_buffered: %u",
+              stream->sm_qflags, stream->stream_flags, stream->sm_bflags,
+              stream->max_send_off, stream->tosend_off, stream->sm_n_buffered);
 
     if (!(stream->sm_qflags & SMQF_WRITE_Q_FLAGS)
         || (stream->stream_flags & STREAM_FINISHED))