diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index a841eec..4c9e758 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -12,7 +12,7 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
-  WASI_SDK_VERSION: 27
+  WASI_SDK_VERSION: 30
 
 permissions:
   contents: write
@@ -82,11 +82,6 @@ jobs:
               os: "ubuntu-latest",
               arch: "amd64",
               maturin_target: "x86_64",
-              # As of this writing, the offical WASI-SDK x86_64-linux builds
-              # require a newer version of glibc than the manylinux 2_28 Maturin
-              # Docker build images support.  That means we need to use a
-              # special build made using Ubuntu 18.04 here:
-              wasiSDK_source: "dicej",
               wasiSDK: "x86_64-linux",
               extension: "",
               buildArgs: "",
@@ -97,7 +92,6 @@ jobs:
               os: "ubuntu-latest",
               arch: "aarch64",
               maturin_target: "aarch64",
-              wasiSDK_source: "WebAssembly",
               wasiSDK: "x86_64-linux",
               extension: "",
               buildArgs: "--target aarch64-unknown-linux-gnu",
@@ -108,7 +102,6 @@ jobs:
               os: "macos-latest",
               arch: "amd64",
               maturin_target: "x86_64",
-              wasiSDK_source: "WebAssembly",
               wasiSDK: "arm64-macos",
               extension: "",
               buildArgs: "",
@@ -119,7 +112,6 @@ jobs:
               os: "macos-latest",
               arch: "aarch64",
               maturin_target: "aarch64",
-              wasiSDK_source: "WebAssembly",
               wasiSDK: "arm64-macos",
               extension: "",
               buildArgs: "--target aarch64-apple-darwin",
@@ -130,7 +122,6 @@ jobs:
               os: "windows-latest",
               arch: "amd64",
               maturin_target: "x64",
-              wasiSDK_source: "WebAssembly",
               wasiSDK: "x86_64-windows",
               extension: ".exe",
               buildArgs: "",
@@ -188,7 +179,7 @@ jobs:
         shell: bash
         run: |
           cd /tmp
-          curl -LO https://github.com/${{ matrix.config.wasiSDK_source }}/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION}/wasi-sdk-${WASI_SDK_VERSION}.0-${{ matrix.config.wasiSDK }}.tar.gz
+          curl -LO https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION}/wasi-sdk-${WASI_SDK_VERSION}.0-${{ matrix.config.wasiSDK }}.tar.gz
           tar xf wasi-sdk-${WASI_SDK_VERSION}.0-${{ matrix.config.wasiSDK }}.tar.gz
 
       - name: Install WASI-SDK
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 0551b7f..7fe7e71 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -14,7 +14,7 @@ concurrency:
 
 env:
   CARGO_TERM_COLOR: always
-  WASI_SDK_VERSION: 27
+  WASI_SDK_VERSION: 30
 
 jobs:
   linux:
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index fc49574..c656d96 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -19,7 +19,7 @@ channel](https://bytecodealliance.zulipchat.com/#narrow/stream/394175-SIG-Guest-
 - Tools needed to build [CPython](https://github.com/python/cpython) (Make, Clang, etc.)
 - [Rust](https://rustup.rs/) stable 1.71 or later *and* nightly 2023-07-27 or later, including the `wasm32-wasip1` and `wasm32-unknown-unknown` targets
   - Note that we currently use the `-Z build-std` Cargo option to build the `componentize-py` runtime with position-independent code (which is not the default for `wasm32-wasip1`) and this requires using a recent nightly build of Rust.
-  
+
 For Rust, something like this should work once you have `rustup`:
 
 ```shell
@@ -38,16 +38,16 @@ First, make sure you've got all the submodules cloned.
 git submodule update --init --recursive
 ```
 
-Next, install WASI-SDK 27 to `/opt/wasi-sdk` (alternatively, you can specify a
+Next, install WASI-SDK 30 to `/opt/wasi-sdk` (alternatively, you can specify a
 different location and reference it later using the `WASI_SDK_PATH` environment
 variable).  Replace `arm64-linux` with `x86_64-linux`, `arm64-macos`,
 `x86_64-macos`, `arm64-windows`, or `x86_64-windows` below depending on your
 architecure and OS, if necessary.
 
 ```shell
-curl -LO https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-27/wasi-sdk-27.0-arm64-linux.tar.gz
-tar xf wasi-sdk-27.0-arm64-linux.tar.gz
-sudo mv wasi-sdk-27.0-arm64-linux /opt/wasi-sdk
+curl -LO https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-30/wasi-sdk-30.0-arm64-linux.tar.gz
+tar xf wasi-sdk-30.0-arm64-linux.tar.gz
+sudo mv wasi-sdk-30.0-arm64-linux /opt/wasi-sdk
 export WASI_SDK_PATH=/opt/wasi-sdk
 ```
 
diff --git a/build.rs b/build.rs
index 62ad47a..6f06ba2 100644
--- a/build.rs
+++ b/build.rs
@@ -16,7 +16,7 @@ use {
 };
 
 const ZSTD_COMPRESSION_LEVEL: i32 = 19;
-const DEFAULT_SDK_VERSION: &str = "27";
+const DEFAULT_SDK_VERSION: &str = "30";
 
 // SQLite version to build - 3.51.2 (latest as of Jan 2026)
 const SQLITE_VERSION: &str = "3510200";