diff --git a/requirements/base.txt b/requirements/base.txt
index 26566e3c4b0..339e35ad3d5 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -24,7 +24,7 @@ gunicorn==23.0.0
     # via -r requirements/base.in
 idna==3.6
     # via yarl
-multidict==6.3.2
+multidict==6.4.2
     # via
     #   -r requirements/runtime-deps.in
     #   yarl
diff --git a/requirements/constraints.txt b/requirements/constraints.txt
index cf8ced7e5e4..dfbb2524e24 100644
--- a/requirements/constraints.txt
+++ b/requirements/constraints.txt
@@ -109,7 +109,7 @@ markupsafe==3.0.2
     # via jinja2
 mdurl==0.1.2
     # via markdown-it-py
-multidict==6.3.2
+multidict==6.4.2
     # via
     #   -r requirements/multidict.in
     #   -r requirements/runtime-deps.in
diff --git a/requirements/cython.txt b/requirements/cython.txt
index 7a3b4737f54..e472d1de6dc 100644
--- a/requirements/cython.txt
+++ b/requirements/cython.txt
@@ -6,7 +6,7 @@
 #
 cython==3.0.12
     # via -r requirements/cython.in
-multidict==6.3.2
+multidict==6.4.2
     # via -r requirements/multidict.in
 typing-extensions==4.13.1
     # via multidict
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 97758afacc9..fdb2448cfa0 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -107,7 +107,7 @@ markupsafe==3.0.2
     # via jinja2
 mdurl==0.1.2
     # via markdown-it-py
-multidict==6.3.2
+multidict==6.4.2
     # via
     #   -r requirements/runtime-deps.in
     #   yarl
diff --git a/requirements/multidict.txt b/requirements/multidict.txt
index 3237ab6c359..70a4468156f 100644
--- a/requirements/multidict.txt
+++ b/requirements/multidict.txt
@@ -4,7 +4,7 @@
 #
 #    pip-compile --allow-unsafe --output-file=requirements/multidict.txt --resolver=backtracking --strip-extras requirements/multidict.in
 #
-multidict==6.3.2
+multidict==6.4.2
     # via -r requirements/multidict.in
 typing-extensions==4.13.1
     # via multidict
diff --git a/requirements/runtime-deps.txt b/requirements/runtime-deps.txt
index ceed0bd80ea..54ed4f30f5e 100644
--- a/requirements/runtime-deps.txt
+++ b/requirements/runtime-deps.txt
@@ -22,7 +22,7 @@ frozenlist==1.5.0
     #   aiosignal
 idna==3.6
     # via yarl
-multidict==6.3.2
+multidict==6.4.2
     # via
     #   -r requirements/runtime-deps.in
     #   yarl
diff --git a/requirements/test.txt b/requirements/test.txt
index cbe1484c08a..2087a3e7569 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -55,7 +55,7 @@ markdown-it-py==3.0.0
     # via rich
 mdurl==0.1.2
     # via markdown-it-py
-multidict==6.3.2
+multidict==6.4.2
     # via
     #   -r requirements/runtime-deps.in
     #   yarl