diff --git a/CHANGELOG.md b/CHANGELOG.md
index fa043de..2fb62c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.1.0] - 2023-11-18
+
+### Changed
+- `curve_length_measure` not supports curves with negative means! Thanks to a contribution by [Schmetzler](https://github.com/Schmetzler) in [PR37](https://github.com/cjekel/similarity_measures/pull/37)
+
 ## [1.0.0] - 2023-10-07
 
 ### Changed
diff --git a/docs/similaritymeasures.html b/docs/similaritymeasures.html
index 657b654..3c615c4 100644
--- a/docs/similaritymeasures.html
+++ b/docs/similaritymeasures.html
@@ -453,8 +453,8 @@ <h1 class="title">Module <code>similaritymeasures.similaritymeasures</code></h1>
         xtemp = np.interp(lieq, lc_sum, x_c)
         ytemp = np.interp(lieq, lc_sum, y_c)
 
-        r_sq[i] = np.log(1.0 + (np.abs(xtemp-x_e[i])/xmean))**2 + \
-            np.log(1.0 + (np.abs(ytemp-y_e[i])/ymean))**2
+        r_sq[i] = np.log(1.0 + (np.abs((xtemp-x_e[i])/xmean)))**2 + \
+            np.log(1.0 + (np.abs((ytemp-y_e[i])/ymean)))**2
     return np.sqrt(np.sum(r_sq))
 
 
@@ -1217,8 +1217,8 @@ <h2 id="examples">Examples</h2>
         xtemp = np.interp(lieq, lc_sum, x_c)
         ytemp = np.interp(lieq, lc_sum, y_c)
 
-        r_sq[i] = np.log(1.0 + (np.abs(xtemp-x_e[i])/xmean))**2 + \
-            np.log(1.0 + (np.abs(ytemp-y_e[i])/ymean))**2
+        r_sq[i] = np.log(1.0 + (np.abs((xtemp-x_e[i])/xmean)))**2 + \
+            np.log(1.0 + (np.abs((ytemp-y_e[i])/ymean)))**2
     return np.sqrt(np.sum(r_sq))</code></pre>
 </details>
 </dd>
diff --git a/docs/version.html b/docs/version.html
index 7152d5d..cdd6d3d 100644
--- a/docs/version.html
+++ b/docs/version.html
@@ -26,7 +26,7 @@ <h1 class="title">Module <code>similaritymeasures.version</code></h1>
 <summary>
 <span>Expand source code</span>
 </summary>
-<pre><code class="python">__version__ = &#34;1.0.0&#34;</code></pre>
+<pre><code class="python">__version__ = &#34;1.1.0&#34;</code></pre>
 </details>
 </section>
 <section>
diff --git a/similaritymeasures/version.py b/similaritymeasures/version.py
index 5becc17..6849410 100644
--- a/similaritymeasures/version.py
+++ b/similaritymeasures/version.py
@@ -1 +1 @@
-__version__ = "1.0.0"
+__version__ = "1.1.0"