diff --git a/lib/rpmscript.c b/lib/rpmscript.c
index 7f49e00ea8..b76c5e8480 100644
--- a/lib/rpmscript.c
+++ b/lib/rpmscript.c
@@ -36,6 +36,7 @@ struct rpmScript_s {
     char *body;			/* script body */
     char *descr;		/* description for logging */
     rpmscriptFlags flags;	/* flags to control operation */
+    char *rpmver;		/* builder rpm version */
     int chroot;			/* chrooted script? */
     struct scriptNextFileFunc_s *nextFileFunc;  /* input function */
 };
@@ -179,11 +180,19 @@ static rpmRC runLuaScript(rpmPlugins plugins, ARGV_const_t prefixes,
 	mode_t oldmask = umask(0);
 	umask(oldmask);
 
+	lua_pushstring(L, "RPM_PACKAGE_RPMVERSION");
+	lua_pushstring(L, script->rpmver);
+	lua_settable(L, LUA_REGISTRYINDEX);
+
 	if (chdir("/") == 0 &&
 		rpmluaRunScript(lua, scriptbuf, script->descr, NULL, *argvp) == 0) {
 	    rc = RPMRC_OK;
 	}
 
+	lua_getfield(L, LUA_REGISTRYINDEX, "RPM_PACKAGE_RPMVERSION");
+	lua_pushnil(L);
+	lua_settable(L, LUA_REGISTRYINDEX);
+
 	/* This failing would be fatal, return something different for it... */
 	if (fchdir(cwd)) {
 	    rpmlog(RPMLOG_ERR, _("Unable to restore current directory: %m"));
@@ -530,6 +539,7 @@ static rpmScript rpmScriptNew(Header h, rpmTagVal tag, const char *body,
     script->type = getScriptType(tag);
     script->flags = getDefFlags(tag) | flags;
     script->body = (body != NULL) ? xstrdup(body) : NULL;
+    script->rpmver = headerGetAsString(h, RPMTAG_RPMVERSION);
     script->chroot = 1;
     rasprintf(&script->descr, "%%%s%s(%s)", prefix, tag2sln(tag), nevra);
 
@@ -706,6 +716,7 @@ rpmScript rpmScriptFree(rpmScript script)
 	free(script->args);
 	free(script->body);
 	free(script->descr);
+	free(script->rpmver);
 	delete script->nextFileFunc;
 	delete script;
     }
diff --git a/rpmio/lposix.c b/rpmio/lposix.c
index 62fe7db073..4f53a3eb14 100644
--- a/rpmio/lposix.c
+++ b/rpmio/lposix.c
@@ -333,7 +333,7 @@ static int Pmkfifo(lua_State *L)		/** mkfifo(path) */
 
 static int Pexec(lua_State *L)			/** exec(path,[args]) */
 {
-	check_deprecated(L, "posix.exec");
+	check_deprecated(L, "posix.exec", "4.20.0");
 
 	const char *path = luaL_checkstring(L, 1);
 	int i,n=lua_gettop(L);
@@ -354,7 +354,7 @@ static int Pexec(lua_State *L)			/** exec(path,[args]) */
 
 static int Pfork(lua_State *L)			/** fork() */
 {
-	check_deprecated(L, "posix.fork");
+	check_deprecated(L, "posix.fork", "4.20.0");
 
 	pid_t pid = fork();
 	if (pid == 0) {
@@ -366,7 +366,7 @@ static int Pfork(lua_State *L)			/** fork() */
 
 static int Pwait(lua_State *L)			/** wait([pid]) */
 {
-	check_deprecated(L, "posix.wait");
+	check_deprecated(L, "posix.wait", "4.20.0");
 
 	pid_t pid = luaL_optinteger(L, 1, -1);
 	return pushresult(L, waitpid(pid, NULL, 0), NULL);
diff --git a/rpmio/lposix.h b/rpmio/lposix.h
index b9874cb060..f1f210edc7 100644
--- a/rpmio/lposix.h
+++ b/rpmio/lposix.h
@@ -4,7 +4,7 @@
 #include <rpm/rpmutil.h>
 
 RPM_GNUC_INTERNAL
-void check_deprecated(lua_State *L, const char *func);
+void check_deprecated(lua_State *L, const char *func, const char *deprecated_in);
 
 RPM_GNUC_INTERNAL
 int luaopen_posix (lua_State *L);
diff --git a/rpmio/rpmlua.c b/rpmio/rpmlua.c
index 8996328f1a..36d7458dee 100644
--- a/rpmio/rpmlua.c
+++ b/rpmio/rpmlua.c
@@ -759,7 +759,7 @@ static int rpm_redirect2null(lua_State *L)
 {
     int target_fd, fd, r, e;
 
-    check_deprecated(L, "rpm.redirect2null");
+    check_deprecated(L, "rpm.redirect2null", "4.20.0");
 
     if (!_rpmlua_have_forked)
 	return luaL_error(L, "redirect2null not permitted in this context");
@@ -1365,8 +1365,22 @@ static int luaopen_rpm(lua_State *L)
     return 1;
 }
 
-void check_deprecated(lua_State *L, const char *func)
+void check_deprecated(lua_State *L, const char *func, const char *deprecated_in)
 {
-    fprintf(stderr,
-	"warning: %s(): .fork(), .exec(), .wait() and .redirect2null() are deprecated, use rpm.spawn() or rpm.execute() instead\n", func);
+    int warn = 1;
+    lua_getfield(L, LUA_REGISTRYINDEX, "RPM_PACKAGE_RPMVERSION");
+    if (lua_isstring(L, -1)) {
+	rpmver v1 = rpmverParse(lua_tostring(L, -1));
+	rpmver v2 = rpmverParse(deprecated_in);
+	if (v1 && v2 && rpmverCmp(v1, v2) < 0)
+	    warn = 0;
+	rpmverFree(v2);
+	rpmverFree(v1);
+    }
+    lua_pop(L, 1);
+
+    if (warn) {
+	fprintf(stderr,
+	    "warning: %s(): .fork(), .exec(), .wait() and .redirect2null() are deprecated, use rpm.spawn() or rpm.execute() instead\n", func);
+    }
 }
diff --git a/tests/data/RPMS/luafork-1.0-1.noarch.rpm b/tests/data/RPMS/luafork-1.0-1.noarch.rpm
new file mode 100644
index 0000000000..a7cd262e79
Binary files /dev/null and b/tests/data/RPMS/luafork-1.0-1.noarch.rpm differ
diff --git a/tests/data/SPECS/luafork.spec b/tests/data/SPECS/luafork.spec
new file mode 100644
index 0000000000..b67bcd887a
--- /dev/null
+++ b/tests/data/SPECS/luafork.spec
@@ -0,0 +1,22 @@
+Name: luafork
+Version: 1.0
+Release: 1
+License: Public domain
+Summary: Testing Lua fork behavior
+BuildArch: noarch
+
+%description
+%{summary}
+
+%pre -p <lua>
+local pid = posix.fork()
+if pid == 0 then
+    io.stdout:write("child\n")
+    os.exit(0)
+elseif pid > 0 then
+    posix.wait(pid)
+else
+    io.stderr:write("fork failed")
+end
+
+%files
diff --git a/tests/rpmscript.at b/tests/rpmscript.at
index 36181fd090..23107193b4 100644
--- a/tests/rpmscript.at
+++ b/tests/rpmscript.at
@@ -801,3 +801,31 @@ runroot_other test -f /tmp/scriptwrite.log
 [])
 RPMTEST_CLEANUP
 
+AT_SETUP([deprecated Lua functions])
+AT_KEYWORDS([script lua])
+
+# binary pre-built on rpm 4.18 should emit no warnings
+RPMTEST_CHECK([
+RPMDB_INIT
+runroot rpm -U /data/RPMS/luafork-1.0-1.noarch.rpm
+],
+[0],
+[child
+],
+[])
+
+RPMTEST_CHECK([
+RPMDB_INIT
+
+runroot rpmbuild -bb --quiet /data/SPECS/luafork.spec
+runroot rpm -U /build/RPMS/noarch/luafork-1.0-1.noarch.rpm
+],
+[0],
+[child
+],
+[warning: posix.fork(): .fork(), .exec(), .wait() and .redirect2null() are deprecated, use rpm.spawn() or rpm.execute() instead
+warning: posix.wait(): .fork(), .exec(), .wait() and .redirect2null() are deprecated, use rpm.spawn() or rpm.execute() instead
+])
+
+RPMTEST_CLEANUP
+