diff --git a/pkg/zlib/build.zig.zon b/pkg/zlib/build.zig.zon
index 1f23bd588..94aa184de 100644
--- a/pkg/zlib/build.zig.zon
+++ b/pkg/zlib/build.zig.zon
@@ -1,11 +1,11 @@
 .{
     .name = "zlib",
-    .version = "1.3.0",
+    .version = "1.3.1",
     .paths = .{""},
     .dependencies = .{
         .zlib = .{
-            .url = "https://github.com/madler/zlib/archive/refs/tags/v1.3.tar.gz",
-            .hash = "12207d353609d95cee9da7891919e6d9582e97b7aa2831bd50f33bf523a582a08547",
+            .url = "https://github.com/madler/zlib/archive/refs/tags/v1.3.1.tar.gz",
+            .hash = "1220fed0c74e1019b3ee29edae2051788b080cd96e90d56836eea857b0b966742efb",
         },
 
         .apple_sdk = .{ .path = "../apple-sdk" },