diff --git a/HISTORY.md b/HISTORY.md
index 46e1b74..0e4e38e 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,11 @@
 # Sanitize History
 
+## 4.6.2 (2018-03-19)
+
+* Reduced string allocations to optimize memory usage. [@janklimo - #175][175]
+
+[175]:https://github.com/rgrove/sanitize/pull/175
+
 ## 4.6.1 (2018-03-15)
 
 * Added support for frozen string literals in Ruby 2.4+.
diff --git a/lib/sanitize/version.rb b/lib/sanitize/version.rb
index 4b912ef..70eaffc 100644
--- a/lib/sanitize/version.rb
+++ b/lib/sanitize/version.rb
@@ -1,5 +1,5 @@
 # encoding: utf-8
 
 class Sanitize
-  VERSION = '4.6.1'
+  VERSION = '4.6.2'
 end