diff --git a/note_seq/alignment/WORKSPACE b/note_seq/alignment/WORKSPACE
index 39df4da..26d8cad 100644
--- a/note_seq/alignment/WORKSPACE
+++ b/note_seq/alignment/WORKSPACE
@@ -20,10 +20,9 @@ http_archive(
 http_archive(
     name = "eigen_repo",
     build_file = "//:eigen.BUILD",
-    sha256 = "7e84ef87a07702b54ab3306e77cea474f56a40afa1c0ab245bb11725d006d0da",
-    strip_prefix = "eigen-eigen-323c052e1731",
+    strip_prefix = "eigen-3.3.7",
     urls = [
-        "https://bitbucket.org/eigen/eigen/get/3.3.7.tar.gz",
+        "https://gitlab.com/libeigen/eigen/-/archive/3.3.7/eigen-3.3.7.zip",
     ],
 )
 
@@ -47,9 +46,8 @@ http_archive(
 
 http_archive(
     name = "bazel_skylib",
-    sha256 = "bbccf674aa441c266df9894182d80de104cabd19be98be002f6d478aaa31574d",
-    strip_prefix = "bazel-skylib-2169ae1c374aab4a09aa90e65efe1a3aad4e279b",
-    urls = ["https://github.com/bazelbuild/bazel-skylib/archive/2169ae1c374aab4a09aa90e65efe1a3aad4e279b.tar.gz"],
+    strip_prefix = "bazel-skylib-master",
+    urls = ["https://github.com/bazelbuild/bazel-skylib/archive/master.zip"],
 )
 
 
diff --git a/note_seq/alignment/align_fine_lib.py b/note_seq/alignment/align_fine_lib.py
index 38877f3..edc499e 100644
--- a/note_seq/alignment/align_fine_lib.py
+++ b/note_seq/alignment/align_fine_lib.py
@@ -129,14 +129,14 @@ def align_cpp(samples,
   # Write to file.
   fh, temp_path = tempfile.mkstemp(suffix='.proto')
   os.close(fh)
-  with open(temp_path, 'w') as f:
+  with open(temp_path, 'wb') as f:
     f.write(alignment_task.SerializeToString())
 
   # Align with C++ program.
   subprocess.check_call([ALIGN_BINARY, temp_path])
 
   # Read file.
-  with open(temp_path + '.result') as f:
+  with open(temp_path + '.result', 'rb') as f:
     result = alignment_pb2.AlignmentResult.FromString(f.read())
 
   # Clean up.
@@ -163,7 +163,7 @@ def align_cpp(samples,
       'time_diff_min_s': np.min(time_diffs),
   }
 
-  for name, value in sorted(stats.iteritems()):
+  for name, value in sorted(stats.items()):
     logging.info('%s: %f', name, value)
 
   aligned_ns, skipped_notes = sequences_lib.adjust_notesequence_times(