diff --git a/Cargo.lock b/Cargo.lock
index 51332919fe755..745209c82ec34 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2879,9 +2879,9 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "libc"
-version = "0.2.139"
+version = "0.2.140"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "201de327520df007757c1f0adce6e827fe8562fbc28bfd9c15571c66ca1f5f79"
+checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
 dependencies = [
  "rustc-std-workspace-core",
 ]
diff --git a/library/std/Cargo.toml b/library/std/Cargo.toml
index 598a4bf928290..6345db240548d 100644
--- a/library/std/Cargo.toml
+++ b/library/std/Cargo.toml
@@ -15,7 +15,7 @@ cfg-if = { version = "1.0", features = ['rustc-dep-of-std'] }
 panic_unwind = { path = "../panic_unwind", optional = true }
 panic_abort = { path = "../panic_abort" }
 core = { path = "../core" }
-libc = { version = "0.2.139", default-features = false, features = ['rustc-dep-of-std'] }
+libc = { version = "0.2.140", default-features = false, features = ['rustc-dep-of-std'] }
 compiler_builtins = { version = "0.1.87" }
 profiler_builtins = { path = "../profiler_builtins", optional = true }
 unwind = { path = "../unwind" }
diff --git a/library/std/src/sys/unix/rand.rs b/library/std/src/sys/unix/rand.rs
index a6fe07873d7ee..0f347ffab42fe 100644
--- a/library/std/src/sys/unix/rand.rs
+++ b/library/std/src/sys/unix/rand.rs
@@ -20,7 +20,8 @@ pub fn hashmap_random_keys() -> (u64, u64) {
     not(target_os = "netbsd"),
     not(target_os = "fuchsia"),
     not(target_os = "redox"),
-    not(target_os = "vxworks")
+    not(target_os = "vxworks"),
+    not(target_os = "emscripten")
 ))]
 mod imp {
     use crate::fs::File;
@@ -174,7 +175,7 @@ mod imp {
     }
 }
 
-#[cfg(target_os = "openbsd")]
+#[cfg(any(target_os = "openbsd", target_os = "emscripten"))]
 mod imp {
     use crate::sys::os::errno;
 
diff --git a/src/ci/docker/scripts/emscripten.sh b/src/ci/docker/scripts/emscripten.sh
index 56dc96283edc1..3f5e2c6ff1dca 100644
--- a/src/ci/docker/scripts/emscripten.sh
+++ b/src/ci/docker/scripts/emscripten.sh
@@ -20,5 +20,5 @@ exit 1
 
 git clone https://github.com/emscripten-core/emsdk.git /emsdk-portable
 cd /emsdk-portable
-hide_output ./emsdk install 1.39.20
-./emsdk activate 1.39.20
+hide_output ./emsdk install 2.0.5
+./emsdk activate 2.0.5