diff --git a/NEWS.md b/NEWS.md
index ca790321b..e80921bab 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -7,6 +7,7 @@ This release contains bug fixes.
 
 - package `functionfit`: Fix bug when creating an approximate BSpline.
 - package `util`: bisection and brentDekker methods will now check the bounds of the interval first.
+- package `eventlist`: Removed free node stack and removed synchronization on the free node stack. This increases the performance when executing many simulations in multi-thread program.
 
 ## SSJ 3.2.0
 
diff --git a/build.gradle b/build.gradle
index 897837d16..8adb737e9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -24,7 +24,7 @@ group = 'ca.umontreal.iro.simul'
 sourceCompatibility = 1.6
 targetCompatibility = 1.6
 
-version = '3.2.0'
+version = '3.2.1'
 
 repositories {
     jcenter()