diff --git a/src/libs/3rdparty/libvterm/src/parser.c b/src/libs/3rdparty/libvterm/src/parser.c
index b43a549cefc..b8959fdfe5b 100644
--- a/src/libs/3rdparty/libvterm/src/parser.c
+++ b/src/libs/3rdparty/libvterm/src/parser.c
@@ -203,7 +203,7 @@ size_t vterm_input_write(VTerm *vt, const char *bytes, size_t len)
     switch(vt->parser.state) {
     case CSI_LEADER:
       /* Extract leader bytes 0x3c to 0x3f */
-      if(c >= 0x3c && c <= 0x3f) {
+      if(c >= 0x3c && c <= 0x3f || c == '!') {
         if(vt->parser.v.csi.leaderlen < CSI_LEADER_MAX-1)
           vt->parser.v.csi.leader[vt->parser.v.csi.leaderlen++] = c;
         break;
diff --git a/src/libs/3rdparty/libvterm/src/state.c b/src/libs/3rdparty/libvterm/src/state.c
index 5362efbcd35..1aa8ce5aa44 100644
--- a/src/libs/3rdparty/libvterm/src/state.c
+++ b/src/libs/3rdparty/libvterm/src/state.c
@@ -934,6 +934,7 @@ static int on_csi(const char *leader, const long args[], int argcount, const cha
       return 0;
 
     switch(leader[0]) {
+    case '!':
     case '?':
     case '>':
       leader_byte = leader[0];