diff --git a/adafruit_ble_heart_rate.py b/adafruit_ble_heart_rate.py
index 37845df..5ad0065 100644
--- a/adafruit_ble_heart_rate.py
+++ b/adafruit_ble_heart_rate.py
@@ -58,20 +58,20 @@
 )
 """Namedtuple for measurement values.
 
-.. py:attribute:: HeartRateMeasurementValues.heart_rate
+.. :attribute:: heart_rate:
 
         Heart rate (int), in beats per minute.
 
-.. py:attribute:: HeartRateMeasurementValues.contact
+.. :attribute:: contact:
 
         ``True`` if device is contacting the body, ``False`` if not,
         ``None`` if device does not support contact detection.
 
-.. py:attribute:: HeartRateMeasurementValues.energy_expended
+.. :attribute:: energy_expended:
 
         Energy expended (int), in kilo joules, or ``None`` if no value.
 
-.. py:attribute:: HeartRateMeasurementValues.rr_intervals
+.. :attribute:: rr_intervals:
 
         Sequence of RR intervals, measuring the time between
         beats. Oldest first, in ints that are units of 1024ths of a second.
diff --git a/docs/conf.py b/docs/conf.py
index 429b6d0..54471e8 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -38,18 +38,18 @@
 master_doc = "index"
 
 # General information about the project.
-project = u"Adafruit BLE_Heart_Rate Library"
-copyright = u"2020 Adafruit Industries"
-author = u"Adafruit Industries"
+project = "Adafruit BLE_Heart_Rate Library"
+copyright = "2020 Adafruit Industries"
+author = "Adafruit Industries"
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = u"1.0"
+version = "1.0"
 # The full version, including alpha/beta/rc tags.
-release = u"1.0"
+release = "1.0"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -140,7 +140,7 @@
     (
         master_doc,
         "AdafruitBLE_Heart_RateLibrary.tex",
-        u"AdafruitBLE_Heart_Rate Library Documentation",
+        "AdafruitBLE_Heart_Rate Library Documentation",
         author,
         "manual",
     ),
@@ -154,7 +154,7 @@
     (
         master_doc,
         "AdafruitBLE_Heart_Ratelibrary",
-        u"Adafruit BLE_Heart_Rate Library Documentation",
+        "Adafruit BLE_Heart_Rate Library Documentation",
         [author],
         1,
     )
@@ -169,7 +169,7 @@
     (
         master_doc,
         "AdafruitBLE_Heart_RateLibrary",
-        u"Adafruit BLE_Heart_Rate Library Documentation",
+        "Adafruit BLE_Heart_Rate Library Documentation",
         author,
         "AdafruitBLE_Heart_RateLibrary",
         "One line description of project.",