diff --git a/.travis/Doxyfile b/.travis/Doxyfile
index fcfe12f..35933e3 100644
--- a/.travis/Doxyfile
+++ b/.travis/Doxyfile
@@ -38,7 +38,7 @@ PROJECT_NAME           = SSLClient
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = v1.6.5
+PROJECT_NUMBER         = v1.6.6
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/library.properties b/library.properties
index ba7a25b..bc37339 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=SSLClient
-version=1.6.5
+version=1.6.6
 author=Noah Koontz <koontzn@oregonstate.edu>
 maintainer=OPEnS Lab
 sentence=Arduino library to add TLS functionality to any Client class