diff --git a/CHANGELOG.md b/CHANGELOG.md
index 97b5615..673e9a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 ChangeLog
 =========
 
+5.1.8 (2023-08-17)
+------------------
+
+* #215 Improve CURLOPT_HTTPHEADER Setting Assignment (@amrita-shrestha)
+
 5.1.7 (2023-06-26)
 ------------------
 
diff --git a/lib/Version.php b/lib/Version.php
index 1c9190c..316e6a4 100644
--- a/lib/Version.php
+++ b/lib/Version.php
@@ -16,5 +16,5 @@ class Version
     /**
      * Full version number.
      */
-    const VERSION = '5.1.7';
+    const VERSION = '5.1.8';
 }