diff --git a/libc-test/semver/emscripten.txt b/libc-test/semver/emscripten.txt
index d14abae402367..4c518d8d08952 100644
--- a/libc-test/semver/emscripten.txt
+++ b/libc-test/semver/emscripten.txt
@@ -1,4 +1,8 @@
 getentropy
+getgrgid
+getgrnam
+getgrnam_r
+getgrgid_r
 posix_fallocate64
 getpwnam_r
 getpwuid_r
diff --git a/src/unix/linux_like/emscripten/mod.rs b/src/unix/linux_like/emscripten/mod.rs
index 33d45bce91911..a1c879efaf02d 100644
--- a/src/unix/linux_like/emscripten/mod.rs
+++ b/src/unix/linux_like/emscripten/mod.rs
@@ -1789,6 +1789,24 @@ extern "C" {
         buflen: ::size_t,
         result: *mut *mut passwd,
     ) -> ::c_int;
+
+    // grp.h
+    pub fn getgrgid(gid: ::gid_t) -> *mut ::group;
+    pub fn getgrnam(name: *const ::c_char) -> *mut ::group;
+    pub fn getgrnam_r(
+        name: *const ::c_char,
+        grp: *mut ::group,
+        buf: *mut ::c_char,
+        buflen: ::size_t,
+        result: *mut *mut ::group,
+    ) -> ::c_int;
+    pub fn getgrgid_r(
+        gid: ::gid_t,
+        grp: *mut ::group,
+        buf: *mut ::c_char,
+        buflen: ::size_t,
+        result: *mut *mut ::group,
+    ) -> ::c_int;
 }
 
 // Alias <foo> to <foo>64 to mimic glibc's LFS64 support