diff --git a/.github/workflows/tests-tox.yaml b/.github/workflows/tests-tox.yaml
index f011d89c..d389fe71 100644
--- a/.github/workflows/tests-tox.yaml
+++ b/.github/workflows/tests-tox.yaml
@@ -49,6 +49,7 @@ jobs:
       - name: Install Mac OS dependencies
         if: runner.os == 'macOS'
         run: |
+          brew install r
           Rscript --no-environ -e "install.packages('BiocManager', repos='https://cloud.r-project.org'); BiocManager::install('DNAcopy')"
       - name: Install test runner tools
         run: pip install flake8 pytest tox
diff --git a/conda-env.yml b/conda-env.yml
index edd3998a..f18b9936 100644
--- a/conda-env.yml
+++ b/conda-env.yml
@@ -17,7 +17,7 @@ dependencies:
     - matplotlib >=3.5.2
     - numpy >=1.24.2
     - pandas >=1.5.3
-    - pomegranate >=0.14.8, <=0.14.9
+    - pomegranate >=0.14.8, <1.0.0
     - pyfaidx >=0.7.1
     - pysam >=0.20.0
     - pytest
diff --git a/devtools/conda-recipe/meta.yaml b/devtools/conda-recipe/meta.yaml
index 61527463..15ecbf1b 100644
--- a/devtools/conda-recipe/meta.yaml
+++ b/devtools/conda-recipe/meta.yaml
@@ -22,7 +22,7 @@ requirements:
     - matplotlib >=3.5.2
     - numpy >=1.24.2
     - pandas >=1.5.3
-    - pomegranate >=0.14.8, <=0.14.9
+    - pomegranate >=0.14.8, <1.0.0
     - pyfaidx >=0.7.1
     - pysam >=0.20.0
     - reportlab >=3.6.12
diff --git a/requirements/core.txt b/requirements/core.txt
index 3c881536..e6684f63 100644
--- a/requirements/core.txt
+++ b/requirements/core.txt
@@ -2,7 +2,7 @@ biopython >= 1.80
 matplotlib >= 3.5.2
 numpy >= 1.24.2
 pandas >= 1.5.3
-pomegranate >=0.14.8, <=0.14.9
+pomegranate >=0.14.8, <1.0.0
 pyfaidx >= 0.7.1
 pysam >= 0.20.0
 reportlab >= 3.6.12