diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 838511750..f468732ab 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -31,7 +31,7 @@ jobs:
       - name: Install
         run: |
           pip install --upgrade pip==20.1.1
-          pip install -i "${{ secrets.INDEX_URL }}" -r requirements/full_requirements.txt
+          pip install --extra-index-url "${{ secrets.INDEX_URL }}" -r requirements/full_requirements.txt
           pip install -r requirements/test_requirements.txt
 
       - name: Test ${{ matrix.component }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c4cb8c62b..62f9e9f68 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -25,7 +25,7 @@ jobs:
         run: |
           pip install --upgrade pip
           pip uninstall -y aws-sam-cli pyyaml # Workaround for fixing an issue with incompatible package versions
-          pip install -i "${{ secrets.INDEX_URL }}" -r requirements/full_requirements.txt
+          pip install --extra-index-url "${{ secrets.INDEX_URL }}" -r requirements/full_requirements.txt
 
       - name: Build
         run: |
diff --git a/Dockerfile b/Dockerfile
index a3add7b80..014d2fe93 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -39,11 +39,11 @@ ENV PATH "${HOME}/.local/bin:${PATH}"
 # Install requirements separately for improved docker caching
 COPY --from=builder /code/prereq.txt .
 RUN --mount=type=secret,id=pip_index_url \
-    pip install -i "$(cat /run/secrets/pip_index_url)" --no-deps -r prereq.txt --no-cache-dir
+    pip install --extra-index-url "$(cat /run/secrets/pip_index_url)" --no-deps -r prereq.txt --no-cache-dir
 
 COPY requirements/full_requirements.txt .
 RUN --mount=type=secret,id=pip_index_url \
-    pip install -i "$(cat /run/secrets/pip_index_url)" -r full_requirements.txt --no-cache-dir
+    pip install --extra-index-url "$(cat /run/secrets/pip_index_url)" -r full_requirements.txt --no-cache-dir
 
 # Install gordo, packaged from earlier 'python setup.py sdist'
 COPY --from=builder /code/dist/gordo-packed.tar.gz .