diff --git a/nix_update/__init__.py b/nix_update/__init__.py
index bb18fb3..00bddf3 100644
--- a/nix_update/__init__.py
+++ b/nix_update/__init__.py
@@ -160,7 +160,10 @@ def git_commit(git_dir: str, package: Package) -> None:
     if isinstance(package.cargo_lock, CargoLockInSource):
         cmd.append(package.cargo_lock.path)
     run(cmd, stdout=None)
-    if new_version and package.old_version != new_version.number:
+    if new_version and (
+        package.old_version != new_version.number
+        or (new_version.rev and new_version.rev != package.rev)
+    ):
         run(
             ["git", "-C", git_dir, "commit", "--verbose", "--message", msg], stdout=None
         )
diff --git a/nix_update/update.py b/nix_update/update.py
index ddb2dbb..c0eb48a 100644
--- a/nix_update/update.py
+++ b/nix_update/update.py
@@ -28,7 +28,11 @@ def replace_version(package: Package) -> bool:
     if new_version.startswith("v"):
         new_version = new_version[1:]
 
-    if old_version != new_version:
+    changed = old_version != new_version or (
+        package.new_version.rev is not None and package.new_version.rev != package.rev
+    )
+
+    if changed:
         info(f"Update {old_version} -> {new_version} in {package.filename}")
         with fileinput.FileInput(package.filename, inplace=True) as f:
             for line in f:
@@ -38,7 +42,7 @@ def replace_version(package: Package) -> bool:
     else:
         info(f"Not updating version, already {old_version}")
 
-    return old_version != new_version
+    return changed
 
 
 def to_sri(hashstr: str) -> str: