diff --git a/docs/changes.rst b/docs/changes.rst
index ac4762af..061f4877 100644
--- a/docs/changes.rst
+++ b/docs/changes.rst
@@ -5,6 +5,25 @@ This page lists recent changes in the `wfdb` package (since version 4.0.0) that
 
 .. _development repository: https://github.com/MIT-LCP/wfdb-python
 
+Version 4.1.2 (June 2023)
+-----------------------------
+
+**Handle more than 8 compressed signals in wrsamp**
+  Previously, the package did not support writing of compressed records with more than 8 channels.
+
+**Use int64 instead of int for ann2rr**
+  Fixes 'np has no attribute np.int' error raised when running ann2rr.
+
+Version 4.1.1 (April 2023)
+-----------------------------
+
+**Remove upper bound on dependencies**
+  Previously, the package provided restrictive caps on version number of dependencies. These caps have been removed.
+
+**Miscellaneous style and typing fixes**
+  Various fixes were made to code style and handling of data types.
+
+
 Version 4.1.0 (December 2022)
 -----------------------------
 
diff --git a/pyproject.toml b/pyproject.toml
index 735b64fb..406cf72f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "wfdb"
-version = "4.1.0"
+version = "4.1.2"
 description = "The WFDB Python package: tools for reading, writing, and processing physiologic signals and annotations."
 authors = ["The Laboratory for Computational Physiology <contact@physionet.org>"]
 readme = "README.md"
diff --git a/tests/test_record.py b/tests/test_record.py
index 9563ef11..8d09e39d 100644
--- a/tests/test_record.py
+++ b/tests/test_record.py
@@ -286,6 +286,33 @@ def test_read_write_flac_multifrequency(self):
         )
         assert record == record_write
 
+    def test_read_write_flac_many_channels(self):
+        """
+        Check we can read and write to format 516 with more than 8 channels.
+        """
+        # Read in a signal with 12 channels in format 16
+        record = wfdb.rdrecord("sample-data/s0010_re", physical=False)
+
+        # Test that we can write out the signal in format 516
+        wfdb.wrsamp(
+            record_name="s0010_re_fmt516",
+            fs=record.fs,
+            units=record.units,
+            sig_name=record.sig_name,
+            fmt=["516"] * record.n_sig,
+            d_signal=record.d_signal,
+            adc_gain=record.adc_gain,
+            baseline=record.baseline,
+            write_dir=self.temp_path,
+        )
+
+        # Check that signal matches the original
+        record_fmt516 = wfdb.rdrecord(
+            os.path.join(self.temp_path, "s0010_re_fmt516"),
+            physical=False,
+        )
+        assert (record.d_signal == record_fmt516.d_signal).all()
+
     def test_read_flac_longduration(self):
         """
         Three signals multiplexed in a FLAC file, over 2**24 samples.
diff --git a/wfdb/io/_header.py b/wfdb/io/_header.py
index dbcc0177..419fb1cf 100644
--- a/wfdb/io/_header.py
+++ b/wfdb/io/_header.py
@@ -384,6 +384,7 @@ def _auto_signal_file_names(self):
                     num_groups += 1
                     channels_in_group = 0
             group_number.append(num_groups)
+            channels_in_group += 1
             prev_fmt = ch_fmt
             prev_spf = ch_spf
 
diff --git a/wfdb/processing/hr.py b/wfdb/processing/hr.py
index 6d6502ad..5e6bfc36 100644
--- a/wfdb/processing/hr.py
+++ b/wfdb/processing/hr.py
@@ -227,7 +227,7 @@ def ann2rr(
     elif format == "h":
         out_interval = time_interval / (60 * 60)
     else:
-        out_interval = np.around(time_interval * ann.fs).astype(np.int)
+        out_interval = np.around(time_interval * ann.fs).astype(np.int64)
 
     if as_array:
         return out_interval
diff --git a/wfdb/version.py b/wfdb/version.py
index 70397087..13ffcf42 100644
--- a/wfdb/version.py
+++ b/wfdb/version.py
@@ -1 +1 @@
-__version__ = "4.1.0"
+__version__ = "4.1.2"