diff --git a/.github/workflows/zig_tests.yml b/.github/workflows/zig_tests.yml
index f4c7e35..26649e1 100644
--- a/.github/workflows/zig_tests.yml
+++ b/.github/workflows/zig_tests.yml
@@ -18,5 +18,5 @@ jobs:
       - uses: actions/checkout@v4
       - uses: purefns/setup-zig@main
         with:
-          version: 0.13.0
+          version: 0.15.1
       - run: zig build test
diff --git a/README.md b/README.md
index 4d7851c..83e305f 100644
--- a/README.md
+++ b/README.md
@@ -121,7 +121,7 @@ cd zig-bytes
 You will need to have the Zig compiler installed on your system.
 
 <!-- RENOVATE -->
-**The current requred version is `0.13.0`.**
+**The current requred version is `0.15.1`.**
 
 You can install it via a number of different methods, with availability depending on your OS:
 
diff --git a/build.zig b/build.zig
index ba26081..fa4ccf6 100644
--- a/build.zig
+++ b/build.zig
@@ -17,7 +17,7 @@ const print = std.debug.print;
 
 comptime {
     // NOTE: keep this in sync with 'flake.nix'
-    const required_zig = "0.13.0";
+    const required_zig = "0.15.1";
     const current_zig = builtin.zig_version;
     const min_zig = std.SemanticVersion.parse(required_zig) catch unreachable;
     if (current_zig.order(min_zig) == .lt) {