diff --git a/.gitignore b/.gitignore
index f306e10..33e1c00 100644
--- a/.gitignore
+++ b/.gitignore
@@ -441,3 +441,4 @@
 /rustc-1.80.1-src.tar.xz
 /wasi-libc-3f43ea9abb24ed8d24d760989e1d87ea385f8eaa.tar.gz
 /rustc-1.81.0-src.tar.xz
+/wasi-libc-b9ef79d7dbd47c6c5bafdae760823467c2f60b70.tar.gz
diff --git a/rust.spec b/rust.spec
index b3daf12..1a2ee8c 100644
--- a/rust.spec
+++ b/rust.spec
@@ -55,8 +55,8 @@ ExclusiveArch:  %{rust_arches}
 # We need CRT files for *-wasi targets, at least as new as the commit in
 # src/ci/docker/host-x86_64/dist-various-2/build-wasi-toolchain.sh
 %global wasi_libc_url https://github.com/WebAssembly/wasi-libc
-#global wasi_libc_ref wasi-sdk-23
-%global wasi_libc_ref 3f43ea9abb24ed8d24d760989e1d87ea385f8eaa
+#global wasi_libc_ref wasi-sdk-24
+%global wasi_libc_ref b9ef79d7dbd47c6c5bafdae760823467c2f60b70
 %global wasi_libc_name wasi-libc-%{wasi_libc_ref}
 %global wasi_libc_source %{wasi_libc_url}/archive/%{wasi_libc_ref}/%{wasi_libc_name}.tar.gz
 %global wasi_libc_dir %{_builddir}/%{wasi_libc_name}
diff --git a/sources b/sources
index 6e100e8..140bdf7 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
 SHA512 (rustc-1.81.0-src.tar.xz) = b8a837ced521d2ca2c7f228a0640da591384519e4dbc1ae768524d50616da6abbd2f7bdae3777caebc0447dac91bf76481282ce5a2264d7f30e173caa6321a51
-SHA512 (wasi-libc-3f43ea9abb24ed8d24d760989e1d87ea385f8eaa.tar.gz) = 845380a421bd002f0ccbbbf49cb16f36b4fb6401f98c9ccfa54d3a75832ca547f2823eedc3788be0a99cd582d9eb8ef5f16d828a6116ded133908ec9a7f20cf7
+SHA512 (wasi-libc-b9ef79d7dbd47c6c5bafdae760823467c2f60b70.tar.gz) = 089ee1f9faeccae85697823d415e34aac56df28cd9db99952a148cb9f91532edbae4ea78f8cd9a223903caadeeb17cbc31d55ea65b020692e4841ddf3914821e