diff --git a/.circleci/config.yml b/.circleci/config.yml
index 31da573..552eae6 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -53,7 +53,7 @@ jobs:
           command: |
             export PYTHONUNBUFFERED=1
             # install dependencies and source code
-            mamba install --verbose --yes  fortran-compiler --file ${PYSOLID_HOME}/requirements.txt --file {PYSOLID_HOME}/tests/requirements.txt
+            mamba install --verbose --yes  fortran-compiler --file ${PYSOLID_HOME}/requirements.txt --file ${PYSOLID_HOME}/tests/requirements.txt
             python -m pip install ${PYSOLID_HOME}
 
       - run: