diff --git a/misc/GNUmakefile b/misc/GNUmakefile
index 617c6e683..6dad2a7e0 100644
--- a/misc/GNUmakefile
+++ b/misc/GNUmakefile
@@ -7,7 +7,7 @@ TEMP =		tmp
 CC =		cl
 OBJS =		objs.msvc8
 OPENSSL =	openssl-3.5.5
-ZLIB =		zlib-1.3.1
+ZLIB =		zlib-1.3.2
 PCRE =		pcre2-10.47