diff --git a/.travis.yml b/.travis.yml
index c2294ce0..8a7d71ed 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,6 @@ os:
 dist: bionic
 language: python
 python:
-  - "3.6"
   - "3.7"
   - "3.8"
   - "3.9"
@@ -52,11 +51,6 @@ jobs:
               export DOCKER_TAG=${TRAVIS_BRANCH//_/-}
               export DOCKER_TAG=${DOCKER_TAG//\//-}
           fi
-        - |
-          docker build . \
-            -f "${TRAVIS_BUILD_DIR}/docker/Dockerfile_py3.6" \
-            -t "${DOCKER_REPO_NAME}:${DOCKER_TAG}-py3.6" \
-            || travis_terminate 1
         - |
           docker build . \
             -f "${TRAVIS_BUILD_DIR}/docker/Dockerfile_py3.7" \
@@ -80,9 +74,6 @@ jobs:
         - |
           echo "${DOCKER_TOKEN}" | \
             docker login -u "${DOCKER_USER}" --password-stdin
-        - |
-          docker push "${DOCKER_REPO_NAME}:${DOCKER_TAG}-py3.6" \
-            || travis_terminate 1
         - |
           docker push "${DOCKER_REPO_NAME}:${DOCKER_TAG}-py3.7" \
             || travis_terminate 1
diff --git a/requirements.txt b/requirements.txt
index efb10f2e..6b36488f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 addict==2.2.1
-celery==4.1.1
+celery==5.2.2
 connexion==2.7.0
 Flask==1.1.2
 Flask-Cors==3.0.9