diff --git a/README.md b/README.md
index 70745a8..f0f55d2 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ For those interested in the *ab initio* thermoelectric data, [see below](#thermo
 1. Make sure you have `python3.6` and the `pip` module installed. 
 We recommend using [conda environments](https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html).
 1. Navigate to the root folder of this repository (the same folder that contains this README file)
-and run `pip install --ignore-installed -r requirements.txt`. Note: If you are using a conda env and any packages fail to compile during this step, you may need to first install those packages separately with `conda install package_name`. 
+and run `pip install --ignore-installed -r requirements.txt -c constraints.txt`. Note: If you are using a conda env and any packages fail to compile during this step, you may need to first install those packages separately with `conda install package_name`. 
 1. Wait for all the requirements to be downloaded and installed.
 1. Run `python setup.py install` to install this module. This will also download the Word2vec model files.
 If the download fails, manually download the [model](https://storage.googleapis.com/mat2vec/pretrained_embeddings), 
diff --git a/constraints.txt b/constraints.txt
new file mode 100644
index 0000000..01a8dd6
--- /dev/null
+++ b/constraints.txt
@@ -0,0 +1 @@
+TableDataExtractor @ git+https://github.com/CambridgeMolecularEngineering/tabledataextractor#egg=tabledataextractor
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 5a56548..83d898a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ monty>=2.0.4
 regex>=2019.6.8
 requests>=2.22.0
 unidecode>=1.1.0
-pymatgen>=2019.6.20
-chemdataextractor>=1.3.0
+pymatgen==2024.5.1
 gensim>=3.7.1
-tqdm>=4.32.2
\ No newline at end of file
+tqdm>=4.32.2
+chemdataextractor2
\ No newline at end of file