diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6316678..3b6b823 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.5.7] - 2021-11-13
+### Added
+- Interactive calculator to Tmux session.
+
 ## [1.5.6] - 2021-11-13
 ### Fixed
 - Alias in [Git Config](home/.config/git/config)
diff --git a/VERSION b/VERSION
index eac1e0a..f01291b 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.5.6
+1.5.7
diff --git a/home/.bashrc b/home/.bashrc
index f46f6ed..e5351ed 100644
--- a/home/.bashrc
+++ b/home/.bashrc
@@ -2,7 +2,7 @@
 if [[ -z "${TMUX}" ]]; then
     if ! tmux has-session; then
         eval $(ssh-agent)
-        tmux new-session
+        tmux new-session -n calculator bc -iq
     else
         tmux new-window
     fi