diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index cb66fc7..a8d5000 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -1279,10 +1279,16 @@
 		$(LUA_LIB) $(MZSCHEME_LIB) $(PERL_LIB) $(PYTHON_LIB) $(PYTHON3_LIB) $(RUBY_LIB) \
 		$(TCL_LIB) $(SOUND_LIB) $(NETBEANS_LIB) $(XPM_LIB) $(SOD_LIB) $(LINK_PDB)
 
-# Report link time code generation progress if used.
+# Enable link time code generation if needed.
 !ifdef NODEBUG
 ! if "$(OPTIMIZE)" != "SPACE"
+!  if "$(CI)" == "true" || "$(CI)" == "True"
+# Enable link time code generation, but do not show the progress.
+LINKARGS1 = $(LINKARGS1) /LTCG
+!  else
+# Report link time code generation progress.
 LINKARGS1 = $(LINKARGS1) /LTCG:STATUS
+!  endif
 ! endif
 !endif
 
diff --git a/src/version.c b/src/version.c
index 3d4fac6..db051aa 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4222,
+/**/
     4221,
 /**/
     4220,