diff --git a/.github/workflows/ubuntu-pyston.yml b/.github/workflows/ubuntu-pyston.yml
index f6cc78f75..0cb857ab7 100644
--- a/.github/workflows/ubuntu-pyston.yml
+++ b/.github/workflows/ubuntu-pyston.yml
@@ -21,7 +21,7 @@ jobs:
         sudo dpkg -i pyston_2.3.4_20.04_amd64.deb
     - name: Install dependencies
       run: |
-        sudo apt-get update -qq && sudo apt-get install -qq liblapack-dev llvm-11 llvm-11-dev libopenblas0
+        sudo apt-get update -qq && sudo apt-get install -qq liblapack-dev llvm-11 llvm-11-dev libopenblas0 tesseract-ocr
         sudo pyston -m pip install --upgrade pip
         sudo LLVM_CONFIG=/usr/lib/llvm-11/bin/llvm-config  pyston -m pip install llvmlite
         # Download wheels for heavy packages from mathics-omnibus
@@ -30,7 +30,7 @@ jobs:
         wget https://github.com/Mathics3/mathics-omnibus/raw/mathics-6.x/docker/src/lxml-4.9.2-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
         wget https://github.com/Mathics3/mathics-omnibus/raw/mathics-6.x/docker/src/wordcloud-1.8.2.2-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
         wget https://github.com/Mathics3/mathics-omnibus/raw/mathics-6.x/docker/src/PyYAML-6.0-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
-        # wget https://github.com/Mathics3/mathics-omnibus/raw/mathics-6.x/docker/src/pyocr-0.8.3-py3-none-any.whl
+        wget https://github.com/Mathics3/mathics-omnibus/raw/mathics-6.x/docker/src/pyocr-0.8.3-py3-none-any.whl
         wget https://github.com/Mathics3/mathics-omnibus/raw/mathics-6.x/docker/src/scikit_image-0.19.3-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
         wget https://github.com/Mathics3/mathics-omnibus/raw/mathics-6.x/docker/src/matplotlib-3.5.2-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
         wget https://github.com/Mathics3/mathics-omnibus/raw/mathics-6.x/docker/src/PyWavelets-1.3.0-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
@@ -45,7 +45,7 @@ jobs:
         pip install lxml-4.9.2-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
         pip install wordcloud-1.8.2.2-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
         pip install PyYAML-6.0-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
-        # pip install pyocr-0.8.3-py3-none-any.whl
+        pip install pyocr-0.8.3-py3-none-any.whl
         pip install scikit_image-0.19.3-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
         pip install pyzmq-23.2.0-pyston38-pyston_23_x86_64_linux_gnu-linux_x86_64.whl
     - name: Install Mathics with full dependencies