respec · austinorr · Jan 31, 2026
diff --git a/.github/workflows/hsp2-pip-install-test.yml b/.github/workflows/hsp2-pip-install-test.yml
@@ -43,7 +43,7 @@ jobs:
                 pandas-version: ['']
                 include:
                     - python-version: '3.11'
-                      pandas-version: pandas>2.0
+                      pandas-version: pandas>2.0,<3.0
                       coverage: true
                     - python-version: '3.11'
                       pandas-version: pandas>1.5,<2.0

diff --git a/environment.yml b/environment.yml
@@ -10,7 +10,7 @@ dependencies:
   # Running HSP2
   - scipy  # Scipy also installs numpy
   # Pandas installs most scientific Python modules, such as Numpy, etc.
-  - pandas
+  - pandas <3.0
   - numba
   - numpy
   - hdf5

diff --git a/environment_dev.yml b/environment_dev.yml
@@ -12,7 +12,7 @@ dependencies:
   # Running HSP2
   - scipy  # Scipy also installs numpy
   # Pandas installs most scientific Python modules, such as Numpy, etc.
-  - pandas >=2.0
+  - pandas >=2.0,<3.0
   - numba
   - numpy
   - hdf5

diff --git a/pyproject.toml b/pyproject.toml
@@ -14,7 +14,7 @@ dependencies = [
     "cltoolbox",
     "numba",
     "numpy<2.0",
-    "pandas",
+    "pandas<3.0",
     "tables",
     "pyparsing"
 ]