diff --git a/libgit2-sys/lib.rs b/libgit2-sys/lib.rs
index cbdca8cdc0..06e1715d04 100644
--- a/libgit2-sys/lib.rs
+++ b/libgit2-sys/lib.rs
@@ -2893,7 +2893,7 @@ extern "C" {
         message: *const c_char,
         tree: *const git_tree,
         parent_count: size_t,
-        parents: *mut *const git_commit,
+        parents: *const *mut git_commit,
     ) -> c_int;
     pub fn git_commit_create_buffer(
         out: *mut git_buf,
@@ -2904,7 +2904,7 @@ extern "C" {
         message: *const c_char,
         tree: *const git_tree,
         parent_count: size_t,
-        parents: *mut *const git_commit,
+        parents: *const *mut git_commit,
     ) -> c_int;
     pub fn git_commit_header_field(
         out: *mut git_buf,
diff --git a/src/repo.rs b/src/repo.rs
index b41b42480c..db00545e4f 100644
--- a/src/repo.rs
+++ b/src/repo.rs
@@ -1290,9 +1290,9 @@ impl Repository {
         parents: &[&Commit<'_>],
     ) -> Result<Oid, Error> {
         let update_ref = crate::opt_cstr(update_ref)?;
-        let mut parent_ptrs = parents
+        let parent_ptrs = parents
             .iter()
-            .map(|p| p.raw() as *const raw::git_commit)
+            .map(|p| p.raw() as *mut raw::git_commit)
             .collect::<Vec<_>>();
         let message = CString::new(message)?;
         let mut raw = raw::git_oid {
@@ -1309,7 +1309,7 @@ impl Repository {
                 message,
                 tree.raw(),
                 parents.len() as size_t,
-                parent_ptrs.as_mut_ptr()
+                parent_ptrs.as_ptr()
             ));
             Ok(Binding::from_raw(&raw as *const _))
         }
@@ -1328,9 +1328,9 @@ impl Repository {
         tree: &Tree<'_>,
         parents: &[&Commit<'_>],
     ) -> Result<Buf, Error> {
-        let mut parent_ptrs = parents
+        let parent_ptrs = parents
             .iter()
-            .map(|p| p.raw() as *const raw::git_commit)
+            .map(|p| p.raw() as *mut raw::git_commit)
             .collect::<Vec<_>>();
         let message = CString::new(message)?;
         let buf = Buf::new();
@@ -1344,7 +1344,7 @@ impl Repository {
                 message,
                 tree.raw(),
                 parents.len() as size_t,
-                parent_ptrs.as_mut_ptr()
+                parent_ptrs.as_ptr()
             ));
             Ok(buf)
         }