diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 14b3cd9c..ca864b8d 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -65,13 +65,13 @@ jobs:
 
       - name: Install Poetry
         run: |
-          pipx install --pip-args=--constraint=.github/workflows/constraints.txt poetry
+          pipx install --pip-args=--constraint=${{ github.workspace }}/.github/workflows/constraints.txt poetry
           poetry --version
 
       - name: Install Nox
         run: |
-          pipx install --pip-args=--constraint=.github/workflows/constraints.txt nox
-          pipx inject --pip-args=--constraint=.github/workflows/constraints.txt nox nox-poetry
+          pipx install --pip-args=--constraint=${{ github.workspace }}/.github/workflows/constraints.txt nox
+          pipx inject --pip-args=--constraint=${{ github.workspace }}/.github/workflows/constraints.txt nox nox-poetry
           nox --version
 
       - name: Install pandoc
@@ -139,13 +139,13 @@ jobs:
 
       - name: Install Poetry
         run: |
-          pipx install --pip-args=--constraint=.github/workflows/constraints.txt poetry
+          pipx install --pip-args=--constraint=${{ github.workspace }}/.github/workflows/constraints.txt poetry
           poetry --version
 
       - name: Install Nox
         run: |
-          pipx install --pip-args=--constraint=.github/workflows/constraints.txt nox
-          pipx inject --pip-args=--constraint=.github/workflows/constraints.txt nox nox-poetry
+          pipx install --pip-args=--constraint=${{ github.workspace }}/.github/workflows/constraints.txt nox
+          pipx inject --pip-args=--constraint=${{ github.workspace }}/.github/workflows/constraints.txt nox nox-poetry
           nox --version
 
       - name: Download coverage data