diff --git a/README.md b/README.md
index f32170f1..dbc05e98 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# NFsim - the network free stochastic simulator, v1.12.1
+# NFsim - the network free stochastic simulator, v1.2.1
 
 [![NFsim build status](https://github.com/RuleWorld/nfsim/workflows/main-validation/badge.svg)](https://github.com/RuleWorld/nfsim/actions)
 <a href="https://scan.coverity.com/projects/nfsim">
@@ -96,6 +96,15 @@ stable. Use at your own risk.
 
 ## Release Notes
 
+### v1.2.1 Feb, 2022
+
+(a) Bugfix release. An accidentally leftover debug statement was removed.
+
+### v1.2.0 Jan, 2022
+
+(a) Added a new built-in function called TFUN that can pull values from a file given a counter observable in a model.
+(b) A new option is added to infer connectivity between reaction rules. This option allows the user to infer "connected" rules before a model is ran and each time a rule fires, only connected rules are checked for updates, instead of every possible rule in the system.
+
 ### v1.12.1 Aug, 2016
 
 (a) Bugfix release. Addresses an error dealing with local function and species
diff --git a/dist/changeFilename.py b/dist/changeFilename.py
index 3048e618..8dd8796e 100644
--- a/dist/changeFilename.py
+++ b/dist/changeFilename.py
@@ -2,7 +2,7 @@
 import platform
 import os
 
-version = '1.12.1'
+version = '1.2.1'
 destdir = os.path.join(version, '{0}-{1}'.format(platform.system(), platform.architecture()[0]))
 os.makedirs(destdir)
 print 'moving NFSIm to {0}\n'.format(destdir)
diff --git a/src/NFsim.cpp b/src/NFsim.cpp
index 50039abb..517c2a69 100644
--- a/src/NFsim.cpp
+++ b/src/NFsim.cpp
@@ -217,7 +217,7 @@ int main(int argc, char *argv[])
 	// turned off for the general release code.
 	//if (!schedulerInterpreter(&argc, &argv)) return 0;
 
-	string versionNumber = "1.12.1";
+	string versionNumber = "1.2.1";
 	cout<<"starting NFsim v"+versionNumber+"..."<<endl<<endl;
 	clock_t start,finish;
 	double time;