diff --git a/requirements.in b/requirements.in
index 7c227128..fa352745 100644
--- a/requirements.in
+++ b/requirements.in
@@ -80,7 +80,7 @@ formulaic==1.2.1
     # via
     #   marginaleffects
     #   mozanalysis
-fsspec==2025.10.0
+fsspec==2025.12.0
     # via dask
 gitdb==4.0.12
     # via gitpython
diff --git a/requirements.txt b/requirements.txt
index 973a8f0f..1e0b8aa0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -609,9 +609,9 @@ formulaic==1.2.1 \
     #   -r requirements.in
     #   marginaleffects
     #   mozanalysis
-fsspec==2025.10.0 \
-    --hash=sha256:7c7712353ae7d875407f97715f0e1ffcc21e33d5b24556cb1e090ae9409ec61d \
-    --hash=sha256:b6789427626f068f9a83ca4e8a3cc050850b6c0f71f99ddb4f542b8266a26a59
+fsspec==2025.12.0 \
+    --hash=sha256:8bf1fe301b7d8acfa6e8571e3b1c3d158f909666642431cc78a1b7b4dbc5ec5b \
+    --hash=sha256:c505de011584597b1060ff778bb664c1bc022e87921b0e4f10cc9c44f9635973
     # via
     #   -r requirements.in
     #   dask