diff --git a/ChangeLog.rst b/ChangeLog.rst
index e04c6d9..3875a6f 100644
--- a/ChangeLog.rst
+++ b/ChangeLog.rst
@@ -1,3 +1,10 @@
+wolfSSL-py Release 5.6.6 (Jan 23, 2024)
+============================================
+* Fix segfault issue with TLS v1.3
+* Update expired example certs
+* Update wolfSSL to version 5.6.6
+
+
 wolfSSL-py Release 5.6.0 (May 2, 2022)
 ============================================
 * Update wolfSSL to version 5.6.0
diff --git a/wolfssl/_build_ffi.py b/wolfssl/_build_ffi.py
index b8a58a7..c02551a 100644
--- a/wolfssl/_build_ffi.py
+++ b/wolfssl/_build_ffi.py
@@ -292,7 +292,7 @@ def generate_libwolfssl():
         get_libwolfssl()
 
 # default values
-OLDTLS_ENABLED = 1
+OLDTLS_ENABLED = 0
 
 if featureDetection:
     OLDTLS_ENABLED = 0 if '#define NO_OLD_TLS' in optionsHeaderStr else 1
diff --git a/wolfssl/_version.py b/wolfssl/_version.py
index 4132b83..cdf206a 100644
--- a/wolfssl/_version.py
+++ b/wolfssl/_version.py
@@ -1,6 +1,6 @@
 # When bumping the C library version, reset the POST count to 0
 
-__wolfssl_version__ = "v5.6.0-stable"
+__wolfssl_version__ = "v5.6.6-stable"
 
 # We're using implicit post releases [PEP 440] to bump package version
 # while maintaining the C library version intact for better reference.
@@ -8,4 +8,4 @@
 #
 # MAJOR.MINOR.BUILD-POST
 
-__version__ = "5.6.0-0"
+__version__ = "5.6.6-0"