diff --git a/.gitignore b/.gitignore
index 9c0f4ca4..fa1e64cc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,4 @@ Session.vim
 
 # sftp configuration file
 sftp-config.json
+*.pyc
diff --git a/Dockerfile b/Dockerfile
index 24920d5e..6c96c8b3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# VERSION 1.8.1-1
+# VERSION 1.9.0-1
 # AUTHOR: Matthieu "Puckel_" Roisil
 # DESCRIPTION: Basic Airflow container
 # BUILD: docker build --rm -t puckel/docker-airflow .
@@ -12,7 +12,7 @@ ENV DEBIAN_FRONTEND noninteractive
 ENV TERM linux
 
 # Airflow
-ARG AIRFLOW_VERSION=1.8.2
+ARG AIRFLOW_VERSION=1.9.0
 ARG AIRFLOW_HOME=/usr/local/airflow
 
 # Define en_US.
@@ -57,7 +57,7 @@ RUN set -ex \
     && pip install ndg-httpsclient \
     && pip install pyasn1 \
     && pip install apache-airflow[crypto,celery,postgres,hive,jdbc]==$AIRFLOW_VERSION \
-    && pip install celery[redis]==3.1.17 \
+    && pip install celery[redis] \
     && apt-get purge --auto-remove -yqq $buildDeps \
     && apt-get clean \
     && rm -rf \
diff --git a/circle.yml b/circle.yml
index 5981fe23..cd93ab2f 100644
--- a/circle.yml
+++ b/circle.yml
@@ -12,4 +12,4 @@ test:
   pre:
     - sleep 5
   override:
-    - docker run puckel/docker-airflow version |grep '1.8.2'
+    - docker run puckel/docker-airflow version |grep '1.9.0'
diff --git a/docker-compose-CeleryExecutor.yml b/docker-compose-CeleryExecutor.yml
index 95025601..303fae25 100644
--- a/docker-compose-CeleryExecutor.yml
+++ b/docker-compose-CeleryExecutor.yml
@@ -16,7 +16,7 @@ services:
         #     - ./pgdata:/var/lib/postgresql/data/pgdata
 
     webserver:
-        image: puckel/docker-airflow:1.8.2
+        image: puckel/docker-airflow:1.9.0
         restart: always
         depends_on:
             - postgres
@@ -41,7 +41,7 @@ services:
             retries: 3
 
     flower:
-        image: puckel/docker-airflow:1.8.2
+        image: puckel/docker-airflow:1.9.0
         restart: always
         depends_on:
             - redis
@@ -53,7 +53,7 @@ services:
         command: flower
 
     scheduler:
-        image: puckel/docker-airflow:1.8.2
+        image: puckel/docker-airflow:1.9.0
         restart: always
         depends_on:
             - webserver
@@ -70,7 +70,7 @@ services:
         command: scheduler
 
     worker:
-        image: puckel/docker-airflow:1.8.2
+        image: puckel/docker-airflow:1.9.0
         restart: always
         depends_on:
             - scheduler
diff --git a/docker-compose-LocalExecutor.yml b/docker-compose-LocalExecutor.yml
index d05c06dd..fbad6319 100644
--- a/docker-compose-LocalExecutor.yml
+++ b/docker-compose-LocalExecutor.yml
@@ -8,7 +8,7 @@ services:
             - POSTGRES_DB=airflow
 
     webserver:
-        image: puckel/docker-airflow:1.8.2
+        image: puckel/docker-airflow:1.9.0
         restart: always
         depends_on:
             - postgres