diff --git a/mpcontribs-portal/requirements/deployment.txt b/mpcontribs-portal/requirements/deployment.txt
index 540cdc6f7..173948d8d 100644
--- a/mpcontribs-portal/requirements/deployment.txt
+++ b/mpcontribs-portal/requirements/deployment.txt
@@ -411,7 +411,7 @@ uncertainties==3.1.7
     # via pymatgen
 uri-template==1.3.0
     # via jsonschema
-urllib3==2.0.6
+urllib3==1.26.18
     # via
     #   botocore
     #   requests
diff --git a/mpcontribs-portal/requirements/ubuntu-latest_py3.10.txt b/mpcontribs-portal/requirements/ubuntu-latest_py3.10.txt
index 8ef86c7b9..937e07705 100644
--- a/mpcontribs-portal/requirements/ubuntu-latest_py3.10.txt
+++ b/mpcontribs-portal/requirements/ubuntu-latest_py3.10.txt
@@ -408,7 +408,7 @@ uncertainties==3.1.7
     # via pymatgen
 uri-template==1.3.0
     # via jsonschema
-urllib3==2.0.6
+urllib3==1.26.18
     # via
     #   botocore
     #   requests
diff --git a/mpcontribs-portal/requirements/ubuntu-latest_py3.10_extras.txt b/mpcontribs-portal/requirements/ubuntu-latest_py3.10_extras.txt
index 49290c2d5..be6ab3b73 100644
--- a/mpcontribs-portal/requirements/ubuntu-latest_py3.10_extras.txt
+++ b/mpcontribs-portal/requirements/ubuntu-latest_py3.10_extras.txt
@@ -426,7 +426,7 @@ uncertainties==3.1.7
     # via pymatgen
 uri-template==1.3.0
     # via jsonschema
-urllib3==2.0.6
+urllib3==1.26.18
     # via
     #   botocore
     #   requests
diff --git a/mpcontribs-portal/requirements/ubuntu-latest_py3.8.txt b/mpcontribs-portal/requirements/ubuntu-latest_py3.8.txt
index 479c024c9..1974c59a4 100644
--- a/mpcontribs-portal/requirements/ubuntu-latest_py3.8.txt
+++ b/mpcontribs-portal/requirements/ubuntu-latest_py3.8.txt
@@ -440,7 +440,7 @@ uncertainties==3.1.7
     # via pymatgen
 uri-template==1.3.0
     # via jsonschema
-urllib3==1.26.17
+urllib3==1.26.18
     # via
     #   botocore
     #   requests
diff --git a/mpcontribs-portal/requirements/ubuntu-latest_py3.8_extras.txt b/mpcontribs-portal/requirements/ubuntu-latest_py3.8_extras.txt
index f6a57f174..c78025a7d 100644
--- a/mpcontribs-portal/requirements/ubuntu-latest_py3.8_extras.txt
+++ b/mpcontribs-portal/requirements/ubuntu-latest_py3.8_extras.txt
@@ -459,7 +459,7 @@ uncertainties==3.1.7
     # via pymatgen
 uri-template==1.3.0
     # via jsonschema
-urllib3==1.26.17
+urllib3==1.26.18
     # via
     #   botocore
     #   requests
diff --git a/mpcontribs-portal/requirements/ubuntu-latest_py3.9.txt b/mpcontribs-portal/requirements/ubuntu-latest_py3.9.txt
index 1092d2596..ba44e47c7 100644
--- a/mpcontribs-portal/requirements/ubuntu-latest_py3.9.txt
+++ b/mpcontribs-portal/requirements/ubuntu-latest_py3.9.txt
@@ -415,7 +415,7 @@ uncertainties==3.1.7
     # via pymatgen
 uri-template==1.3.0
     # via jsonschema
-urllib3==1.26.17
+urllib3==1.26.18
     # via
     #   botocore
     #   requests
diff --git a/mpcontribs-portal/requirements/ubuntu-latest_py3.9_extras.txt b/mpcontribs-portal/requirements/ubuntu-latest_py3.9_extras.txt
index 75e126872..dd23e6dfb 100644
--- a/mpcontribs-portal/requirements/ubuntu-latest_py3.9_extras.txt
+++ b/mpcontribs-portal/requirements/ubuntu-latest_py3.9_extras.txt
@@ -433,7 +433,7 @@ uncertainties==3.1.7
     # via pymatgen
 uri-template==1.3.0
     # via jsonschema
-urllib3==1.26.17
+urllib3==1.26.18
     # via
     #   botocore
     #   requests