diff --git a/.github/workflows/python_package.yml b/.github/workflows/python_package.yml
index 6fe653e..03a6960 100644
--- a/.github/workflows/python_package.yml
+++ b/.github/workflows/python_package.yml
@@ -21,6 +21,8 @@ jobs:
     - uses: actions/checkout@v4
     - name: setup-ffmpeg
       uses: FedericoCarboni/setup-ffmpeg@v3
+      with:
+        ffmpeg-version: 4.2.2
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with:
diff --git a/README.rst b/README.rst
index dda3365..93be982 100644
--- a/README.rst
+++ b/README.rst
@@ -44,7 +44,7 @@ Python 3 versions may also work.
 
     .. code-block:: bash
 
-      $ conda create -n mybirdwatcher python=3.9 jupyterlab ffmpeg git
+      $ conda create -n mybirdwatcher python=3.9 jupyterlab ffmpeg=4.2.2 git
 
 #. Switch to this new environment:
 
diff --git a/docs/installation.rst b/docs/installation.rst
index 8229d79..1c0cd49 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -17,7 +17,7 @@ Python 3 versions may also work.
 
     .. code-block:: bash
 
-      $ conda create -n mybirdwatcher python=3.9 jupyterlab ffmpeg git
+      $ conda create -n mybirdwatcher python=3.9 jupyterlab ffmpeg=4.2.2 git
 
 #. Switch to this new environment:
 
diff --git a/requirements.txt b/requirements.txt
index 1c50360..63c447c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
-numpy
-pandas
-matplotlib
-seaborn
-darr >= 0.4.1
-opencv-python
-opencv-contrib-python
+numpy==2.0.2
+pandas==2.2.3
+matplotlib==3.9.2
+seaborn==0.13.2
+darr==0.6.0
+opencv-python==4.10.0.84
+opencv-contrib-python==4.10.0.84
\ No newline at end of file