diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9a3281f1..0dab5dea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 # Vx.x.x (Pre-release)
 
 ## Changes since v4.0.0
-
+- [#291][https://github.com/pusher/oauth2_proxy/pull/291] Added bash >= 4.0 dependency to configure script (@jmfrank63)
 - [#227](https://github.com/pusher/oauth2_proxy/pull/227) Add Keycloak provider (@Ofinka)
 - [#259](https://github.com/pusher/oauth2_proxy/pull/259) Redirect to HTTPS (@jmickey)
 - [#273](https://github.com/pusher/oauth2_proxy/pull/273) Support Go 1.13 (@dio)
diff --git a/configure b/configure
index 26db8fea..10af15e6 100755
--- a/configure
+++ b/configure
@@ -5,6 +5,10 @@ GREEN='\033[0;32m'
 BLUE='\033[0;34m'
 NC='\033[0m'
 
+if [ -z "${BASH_VERSINFO}" ] || [ -z "${BASH_VERSINFO[0]}" ] || [ ${BASH_VERSINFO[0]} -lt 4 ]; then 
+  echo "This script requires Bash version >= 4"; exit 1; 
+fi
+
 declare -A tools=()
 declare -A desired=()