diff --git a/requirements/base.txt b/requirements/base.txt
index 212a95b86fe..7291851d2e7 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -14,7 +14,7 @@ async-timeout==5.0.1 ; python_version < "3.11"
     # via -r requirements/runtime-deps.in
 brotli==1.1.0 ; platform_python_implementation == "CPython"
     # via -r requirements/runtime-deps.in
-cffi==1.17.1
+cffi==2.0.0
     # via pycares
 frozenlist==1.7.0
     # via
diff --git a/requirements/constraints.txt b/requirements/constraints.txt
index 8d67aafa0ca..c2af6efe9b4 100644
--- a/requirements/constraints.txt
+++ b/requirements/constraints.txt
@@ -34,7 +34,7 @@ build==1.3.0
     # via pip-tools
 certifi==2025.8.3
     # via requests
-cffi==1.17.1
+cffi==2.0.0
     # via
     #   cryptography
     #   pycares
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 8818a371c6c..013978d8be1 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -34,7 +34,7 @@ build==1.3.0
     # via pip-tools
 certifi==2025.8.3
     # via requests
-cffi==1.17.1
+cffi==2.0.0
     # via
     #   cryptography
     #   pycares
diff --git a/requirements/lint.txt b/requirements/lint.txt
index b0e25122ea1..2359ff8e77d 100644
--- a/requirements/lint.txt
+++ b/requirements/lint.txt
@@ -12,7 +12,7 @@ async-timeout==5.0.1
     # via valkey
 blockbuster==1.5.25
     # via -r requirements/lint.in
-cffi==1.17.1
+cffi==2.0.0
     # via
     #   cryptography
     #   pycares
diff --git a/requirements/runtime-deps.txt b/requirements/runtime-deps.txt
index 08b726975ea..67035682c78 100644
--- a/requirements/runtime-deps.txt
+++ b/requirements/runtime-deps.txt
@@ -14,7 +14,7 @@ async-timeout==5.0.1 ; python_version < "3.11"
     # via -r requirements/runtime-deps.in
 brotli==1.1.0 ; platform_python_implementation == "CPython"
     # via -r requirements/runtime-deps.in
-cffi==1.17.1
+cffi==2.0.0
     # via pycares
 frozenlist==1.7.0
     # via
diff --git a/requirements/test.txt b/requirements/test.txt
index 368176b6278..f0a9491d371 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -18,7 +18,7 @@ blockbuster==1.5.25
     # via -r requirements/test.in
 brotli==1.1.0 ; platform_python_implementation == "CPython"
     # via -r requirements/runtime-deps.in
-cffi==1.17.1
+cffi==2.0.0
     # via
     #   cryptography
     #   pycares