diff --git a/.github/workflows/build-zig-11.yaml b/.github/workflows/build-zig-11.yaml
index f2008ae..dcbda4e 100644
--- a/.github/workflows/build-zig-11.yaml
+++ b/.github/workflows/build-zig-11.yaml
@@ -1,4 +1,4 @@
-name: Works with Zig 0.11.0
+name: Works with Zig 0.12.0
 on:
   push:
     branches:
@@ -16,7 +16,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: goto-bus-stop/setup-zig@v2
       with:
-        version: 0.11.0
+        version: 0.12.0
     - name: Check zig version
       run: zig version
     - name: Build
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index a55d710..45db944 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -16,7 +16,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: goto-bus-stop/setup-zig@v2
       with:
-        version: 0.11.0
+        version: 0.12.0
     - name: Check zig version
       run: zig version
     - name: Build
diff --git a/src/main.zig b/src/main.zig
index c71048c..710e873 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1,5 +1,5 @@
 const std = @import("std");
-const os = @import("std").os;
+const posix = @import("std").posix;
 const http = @import("std").http;
 const mem = @import("std").mem;
 const cURL = @cImport({
@@ -44,7 +44,7 @@ pub fn main() !void {
     const latitude = args[1];
     const longitude = args[2];
 
-    const api_key = os.getenv("OPEN_WEATHER_MAP_API_KEY") orelse {
+    const api_key = posix.getenv("OPEN_WEATHER_MAP_API_KEY") orelse {
         try stdout.print("{{\"text\":\"missing key\"}}\n", .{});
         return;
     };