diff --git a/sysa/heirloom-devtools-070527/heirloom-devtools-070527.checksums b/sysa/heirloom-devtools-070527/heirloom-devtools-070527.checksums
index 2f78014..d1ab8be 100644
--- a/sysa/heirloom-devtools-070527/heirloom-devtools-070527.checksums
+++ b/sysa/heirloom-devtools-070527/heirloom-devtools-070527.checksums
@@ -1,4 +1,4 @@
-b0a53dfe0f4cd5b9d3c1a459560a957030e52839f29b0d378e5234bf412705d6  /usr/bin/yacc
+9f5186c86f8a2c7a0eb39d11f7017fc70d5a3940d56c648f93f6a3189ac1d67f  /usr/bin/yacc
 0fa43f12e3e32987211a433a9692f939b2c5d0dc32cd5523f9ad50bb441ac580  /usr/bin/lex
 ffe696afc1bda32a5f4035e29b3275cab73a27df7635ccbe02ed49a30374ccdd  /usr/lib/mes/libl.a
 bf3fb293f1ff89ee3dbcb08166c64b7a6793b49a12673d7633e3353ebea80d4d  /yaccpar
diff --git a/sysa/heirloom-devtools-070527/patches/yacc_remove_wchar.patch b/sysa/heirloom-devtools-070527/patches/yacc_remove_wchar.patch
index dd68a48..8ce6fd5 100644
--- a/sysa/heirloom-devtools-070527/patches/yacc_remove_wchar.patch
+++ b/sysa/heirloom-devtools-070527/patches/yacc_remove_wchar.patch
@@ -1,5 +1,6 @@
 SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
 SPDX-FileCopyrightText: 2021 fosslinux <fosslinux@aussies.space>
+SPDX-FileCopyrightText: 2023 Emily Trau <emily@downunderctf.com>
 
 SPDX-License-Identifier: CDDL-1.0
 
@@ -227,7 +228,7 @@ diff -U3 -r yacc/y1.c yacc/y1.c
 -		q = chcopy(q, L"    (");
 -		swprintf(q, q + isize - sarr, L"%d)", -i);
 +		q = chcopy(q, "    (");
-+		sprintf(q, q + isize - sarr, "%d)", -i);
++		snprintf(q, q + isize - sarr, "%d)", -i);
  	}
  	return (sarr);
  }
@@ -393,7 +394,7 @@ diff -U3 -r yacc/y2.c yacc/y2.c
  				lrprnt();		/* dump lhs, rhs */
 -				swprintf(actname, sizeof actname,
 -						L"$$%d", nprod);
-+				sprintf(actname, sizeof actname,
++				snprintf(actname, sizeof actname,
 +						"$$%d", nprod);
  				/*
  				 * make it nonterminal