diff --git a/README.md b/README.md
index d498ac9..6c93345 100644
--- a/README.md
+++ b/README.md
@@ -2,11 +2,11 @@
     =====================================
     generator=datazen
     version=3.1.2
-    hash=1cdc07131261518d6adc3cc3b858a4e5
+    hash=c8539167d87cd90bab3348640cfcc01d
     =====================================
 -->
 
-# vcorelib ([2.1.0](https://pypi.org/project/vcorelib/))
+# vcorelib ([2.1.1](https://pypi.org/project/vcorelib/))
 
 [![python](https://img.shields.io/pypi/pyversions/vcorelib.svg)](https://pypi.org/project/vcorelib/)
 ![Build Status](https://github.com/vkottler/vcorelib/workflows/Python%20Package/badge.svg)
diff --git a/local/variables/package.yaml b/local/variables/package.yaml
index cbd7ae0..2dc1b19 100644
--- a/local/variables/package.yaml
+++ b/local/variables/package.yaml
@@ -1,4 +1,4 @@
 ---
 major: 2
 minor: 1
-patch: 0
+patch: 1
diff --git a/pyproject.toml b/pyproject.toml
index a60293a..c0f6740 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta:__legacy__"
 
 [project]
 name = "vcorelib"
-version = "2.1.0"
+version = "2.1.1"
 description = "A collection of core Python utilities."
 readme = "README.md"
 requires-python = ">=3.8"
diff --git a/vcorelib/__init__.py b/vcorelib/__init__.py
index 5b2a35d..fd57188 100644
--- a/vcorelib/__init__.py
+++ b/vcorelib/__init__.py
@@ -1,7 +1,7 @@
 # =====================================
 # generator=datazen
 # version=3.1.2
-# hash=f10b2b08bda3a1c912bec72ab1620fde
+# hash=755514cb838cd49df3f095036c06cce4
 # =====================================
 
 """
@@ -10,7 +10,7 @@
 
 DESCRIPTION = "A collection of core Python utilities."
 PKG_NAME = "vcorelib"
-VERSION = "2.1.0"
+VERSION = "2.1.1"
 
 # vcorelib-specific content.
 DEFAULT_INDENT = 2
diff --git a/vcorelib/math/analysis/rate/__init__.py b/vcorelib/math/analysis/rate/__init__.py
index b0bf731..1f46748 100644
--- a/vcorelib/math/analysis/rate/__init__.py
+++ b/vcorelib/math/analysis/rate/__init__.py
@@ -43,19 +43,13 @@ def max(self) -> float:
         """An accessor for the underlying max."""
         return self.average.max
 
-    def __call__(self, time_ns: int = None, value: float = 1.0) -> float:
-        """
-        Submit new data to the rate tracker. If this function is called with
-        default arguments, the returned value will reflect the rate that this
-        method is being called in hertz.
-        """
+    def poll(self, time_ns: int = None) -> float:
+        """Siphon accumulated time and update rate tracking."""
 
         # Use a default time if one wasn't provided.
         if time_ns is None:
             time_ns = _default_time_ns()
 
-        self.accumulated += value
-
         # Only start tracking when a second data point is encountered.
         if self.prev_time_ns != 0 and time_ns > self.prev_time_ns:
             # Consider 'value' as the amount of change since the last data
@@ -66,8 +60,19 @@ def __call__(self, time_ns: int = None, value: float = 1.0) -> float:
             self.accumulated = 0
 
         self.prev_time_ns = time_ns
+
         return self.average.value
 
+    def __call__(self, time_ns: int = None, value: float = 1.0) -> float:
+        """
+        Submit new data to the rate tracker. If this function is called with
+        default arguments, the returned value will reflect the rate that this
+        method is being called in hertz.
+        """
+
+        self.accumulated += value
+        return self.poll(time_ns=time_ns)
+
     def with_dt(self, delta_s: float, value: float = 1.0) -> float:
         """Update this rate by directly providing the delta-time value."""
         return self.average(value / delta_s)