diff --git a/.taskcluster.yml b/.taskcluster.yml
index a68bba6e0..a9dd5884c 100644
--- a/.taskcluster.yml
+++ b/.taskcluster.yml
@@ -65,8 +65,8 @@ tasks:
           - sh
           - -lxce
           - "git clone --quiet ${repository} /src && cd /src && git checkout ${head_rev} -b checks &&
-            cd /src/bot && pip install --quiet -r requirements-dev.txt &&
-            cd /src/backend && pip install --quiet -r requirements-dev.txt &&
+            cd /src/bot && pip install --disable-pip-version-check --no-cache-dir --quiet -r requirements-dev.txt &&
+            cd /src/backend && pip install --disable-pip-version-check --no-cache-dir --quiet -r requirements-dev.txt &&
             cd /src && pre-commit run -a"
       metadata:
         name: "Code Coverage checks: linting"
@@ -88,7 +88,7 @@ tasks:
           - "git clone --quiet ${repository} /src && cd /src && git checkout ${head_rev} -b checks &&
             /src/bot/ci/bootstrap.sh &&
             cd /src/tools && python3 setup.py install &&
-            cd /src/bot && pip3 install --quiet . && pip3 install --quiet -r requirements-dev.txt &&
+            cd /src/bot && pip3 install --disable-pip-version-check --no-cache-dir --quiet . && pip3 install --disable-pip-version-check --no-cache-dir --quiet -r requirements-dev.txt &&
             pytest -v"
       metadata:
         name: "Code Coverage Bot checks: unit tests"
@@ -109,7 +109,7 @@ tasks:
           - -lxce
           - "git clone --quiet ${repository} /src && cd /src && git checkout ${head_rev} -b checks &&
             cd /src/tools && python setup.py install &&
-            cd /src/backend && pip install --quiet . && pip install --quiet -r requirements-dev.txt &&
+            cd /src/backend && pip install --disable-pip-version-check --no-cache-dir --quiet . && pip install --disable-pip-version-check --no-cache-dir --quiet -r requirements-dev.txt &&
             pytest -v"
       metadata:
         name: "Code Coverage Backend checks: unit tests"
@@ -129,7 +129,7 @@ tasks:
           - sh
           - -lxce
           - "git clone --quiet ${repository} /src && cd /src && git checkout ${head_rev} -b checks &&
-            cd /src/events && pip install -q -r requirements.txt && pip install --quiet . && pip install --quiet -r requirements-dev.txt &&
+            cd /src/events && pip install --disable-pip-version-check --no-cache-dir --quiet -q -r requirements.txt && pip install --disable-pip-version-check --no-cache-dir --quiet . && pip install --disable-pip-version-check --no-cache-dir --quiet -r requirements-dev.txt &&
             pytest -v"
       metadata:
         name: "Code Coverage Events checks: unit tests"
diff --git a/backend/Dockerfile b/backend/Dockerfile
index d9abfd03f..5b350f1e7 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -3,7 +3,7 @@ FROM python:3.7-slim
 ADD tools /src/tools
 ADD backend /src/backend
 
-RUN cd /src/tools && python setup.py install
-RUN cd /src/backend && python setup.py install
+RUN cd /src/tools && pip install --disable-pip-version-check --no-cache-dir --quiet .
+RUN cd /src/backend && pip install --disable-pip-version-check --no-cache-dir --quiet .
 
 CMD ["gunicorn", "code_coverage_backend.flask:app", "--timeout", "30"]
diff --git a/bot/Dockerfile b/bot/Dockerfile
index 9d1138aea..c166e614d 100644
--- a/bot/Dockerfile
+++ b/bot/Dockerfile
@@ -5,7 +5,7 @@ ADD bot /src/bot
 
 RUN /src/bot/ci/bootstrap.sh
 
-RUN cd /src/tools && python setup.py install
-RUN cd /src/bot && python setup.py install
+RUN cd /src/tools && pip install --disable-pip-version-check --no-cache-dir --quiet .
+RUN cd /src/bot && pip install --disable-pip-version-check --no-cache-dir --quiet .
 
 CMD ["code-coverage-bot"]
diff --git a/events/Dockerfile b/events/Dockerfile
index b07a4bff6..dc7cf789e 100644
--- a/events/Dockerfile
+++ b/events/Dockerfile
@@ -4,7 +4,7 @@ FROM python:3.7-slim
 ADD tools /src/tools
 ADD events /src/events
 
-RUN cd /src/tools && python setup.py install
-RUN cd /src/events && python setup.py install
+RUN cd /src/tools && pip install --disable-pip-version-check --no-cache-dir --quiet .
+RUN cd /src/events && pip install --disable-pip-version-check --no-cache-dir --quiet .
 
 CMD ["code-coverage-events"]