diff --git a/docs/install-anaconda.md b/docs/install-anaconda.md
index db7b2bd7d12655f48e5eb4ccb9f1fe2b5371e4b5..4ba6915c47ce027619eb075d9cf8f10f9ac7bc8f 100644
--- a/docs/install-anaconda.md
+++ b/docs/install-anaconda.md
@@ -9,7 +9,7 @@ conda update --all
 conda create -n wetb_py3 python=3.5
 source activate wetb_py3
 conda install setuptools_scm future h5py pytables pytest nose sphinx
-conda install scipy pandas matplotlib cython xlrd coverage xlwt
+conda install scipy pandas matplotlib cython xlrd coverage xlwt openpyxl
 pip install pyscaffold pytest-cov
 ```
 
diff --git a/docs/install-manual-detailed.md b/docs/install-manual-detailed.md
index aa2216a782555a026b521dc1e46eb6f0a60f6d8b..81acbbbf1f66f1df6eca725f17ec283dc09f15e6 100644
--- a/docs/install-manual-detailed.md
+++ b/docs/install-manual-detailed.md
@@ -165,15 +165,15 @@ activate py27
 * Install the necessary Python dependencies using the conda package manager:
 
 ```
-conda install setuptools_scm future h5py pytables pytest pytest-cov nose sphinx
-conda install scipy pandas matplotlib cython xlrd sphinx
+conda install setuptools_scm future h5py pytables pytest nose sphinx
+conda install scipy pandas matplotlib cython xlrd coverage xlwt openpyxl
 ```
 
 * Not all packages are available in the conda repositories, but they can be
 easily installed with pip:
 
 ```
-pip install pyscaffold pytest
+pip install pyscaffold pytest-cov
 ```