diff --git a/emmet-builders/requirements/ubuntu-latest_py3.10.txt b/emmet-builders/requirements/ubuntu-latest_py3.10.txt
index 1ac009a2c5..701fd16820 100644
--- a/emmet-builders/requirements/ubuntu-latest_py3.10.txt
+++ b/emmet-builders/requirements/ubuntu-latest_py3.10.txt
@@ -323,7 +323,7 @@ pydash==8.0.1
     # via maggma
 pygments==2.18.0
     # via rich
-pymatgen==2024.5.1
+pymatgen==2024.4.13
     # via
     #   chgnet
     #   emmet-core
diff --git a/emmet-builders/requirements/ubuntu-latest_py3.11.txt b/emmet-builders/requirements/ubuntu-latest_py3.11.txt
index 3f4b9c8b73..3acfbc9b32 100644
--- a/emmet-builders/requirements/ubuntu-latest_py3.11.txt
+++ b/emmet-builders/requirements/ubuntu-latest_py3.11.txt
@@ -319,7 +319,7 @@ pydash==8.0.1
     # via maggma
 pygments==2.18.0
     # via rich
-pymatgen==2024.5.1
+pymatgen==2024.4.13
     # via
     #   chgnet
     #   emmet-core
diff --git a/emmet-builders/requirements/ubuntu-latest_py3.9.txt b/emmet-builders/requirements/ubuntu-latest_py3.9.txt
index daa5ff1fc7..1e8bbce205 100644
--- a/emmet-builders/requirements/ubuntu-latest_py3.9.txt
+++ b/emmet-builders/requirements/ubuntu-latest_py3.9.txt
@@ -331,7 +331,7 @@ pydash==8.0.1
     # via maggma
 pygments==2.18.0
     # via rich
-pymatgen==2024.5.1
+pymatgen==2024.4.13
     # via
     #   chgnet
     #   emmet-core
diff --git a/emmet-core/requirements/ubuntu-latest_py3.10.txt b/emmet-core/requirements/ubuntu-latest_py3.10.txt
index b39b8eeff7..b34e8df7a2 100644
--- a/emmet-core/requirements/ubuntu-latest_py3.10.txt
+++ b/emmet-core/requirements/ubuntu-latest_py3.10.txt
@@ -68,7 +68,7 @@ pydantic-core==2.18.2
     # via pydantic
 pydantic-settings==2.2.1
     # via emmet-core (setup.py)
-pymatgen==2024.5.1
+pymatgen==2024.4.13
     # via emmet-core (setup.py)
 pyparsing==3.1.2
     # via matplotlib
diff --git a/emmet-core/requirements/ubuntu-latest_py3.11.txt b/emmet-core/requirements/ubuntu-latest_py3.11.txt
index 968fbd4c92..bf2baf53ff 100644
--- a/emmet-core/requirements/ubuntu-latest_py3.11.txt
+++ b/emmet-core/requirements/ubuntu-latest_py3.11.txt
@@ -68,7 +68,7 @@ pydantic-core==2.18.2
     # via pydantic
 pydantic-settings==2.2.1
     # via emmet-core (setup.py)
-pymatgen==2024.5.1
+pymatgen==2024.4.13
     # via emmet-core (setup.py)
 pyparsing==3.1.2
     # via matplotlib
diff --git a/emmet-core/requirements/ubuntu-latest_py3.9.txt b/emmet-core/requirements/ubuntu-latest_py3.9.txt
index 049258cbd7..c6f4d5c43d 100644
--- a/emmet-core/requirements/ubuntu-latest_py3.9.txt
+++ b/emmet-core/requirements/ubuntu-latest_py3.9.txt
@@ -72,7 +72,7 @@ pydantic-core==2.18.2
     # via pydantic
 pydantic-settings==2.2.1
     # via emmet-core (setup.py)
-pymatgen==2024.5.1
+pymatgen==2024.4.13
     # via emmet-core (setup.py)
 pyparsing==3.1.2
     # via matplotlib