diff --git a/sources.json b/sources.json
index 3a393ec..e54b2e6 100644
--- a/sources.json
+++ b/sources.json
@@ -36,34 +36,34 @@
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-        "sha256": "33734042e447fc43ddcfe195664602d44688666d8d1a6ba483aec4b24bdb49d3"
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+        "version": "0.12.0-dev.978+78855bd21",
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       "aarch64-linux": {
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+        "url": "https://ziglang.org/builds/zig-linux-aarch64-0.12.0-dev.978+78855bd21.tar.xz",
+        "version": "0.12.0-dev.978+78855bd21",
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       "x86_64-darwin": {
-        "url": "https://ziglang.org/builds/zig-macos-x86_64-0.12.0-dev.934+a241cf90d.tar.xz",
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+        "url": "https://ziglang.org/builds/zig-macos-x86_64-0.12.0-dev.978+78855bd21.tar.xz",
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       "x86_64-windows": {
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-        "version": "0.12.0-dev.934+a241cf90d"
+        "url": "https://ziglang.org/builds/zig-windows-x86_64-0.12.0-dev.978+78855bd21.zip",
+        "sha256": "af3be32ecbca82ae5d9586e11ff20640913a8cb13147370efd7e5cf23a13daa0",
+        "version": "0.12.0-dev.978+78855bd21"
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       "aarch64-windows": {
-        "url": "https://ziglang.org/builds/zig-windows-aarch64-0.12.0-dev.934+a241cf90d.zip",
-        "sha256": "21995cfb4c0deea0a009e4e8edb87591a813ad6aebca1cfce36f3fddfbb5da9f",
-        "version": "0.12.0-dev.934+a241cf90d"
+        "url": "https://ziglang.org/builds/zig-windows-aarch64-0.12.0-dev.978+78855bd21.zip",
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+        "version": "0.12.0-dev.978+78855bd21"
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     "2021-02-20": {
@@ -18232,6 +18232,38 @@
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         "version": "0.12.0-dev.934+a241cf90d"
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+    },
+    "2023-10-17": {
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+        "url": "https://ziglang.org/builds/zig-macos-aarch64-0.12.0-dev.978+78855bd21.tar.xz",
+        "sha256": "64d3ce01da586ac0c303199af56cc950072d871e22955442c6405aa569421147",
+        "version": "0.12.0-dev.978+78855bd21"
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+      "x86_64-linux": {
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+      "aarch64-linux": {
+        "url": "https://ziglang.org/builds/zig-linux-aarch64-0.12.0-dev.978+78855bd21.tar.xz",
+        "sha256": "d42512dd6756759076d6617979a500cd5b69da67bddf4eb4a716ce066a625208",
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+        "version": "0.12.0-dev.978+78855bd21"
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