diff --git a/examples/tools/typing/mypy_requirements.txt b/examples/tools/typing/mypy_requirements.txt
index f65b1f1..9a86c0c 100644
--- a/examples/tools/typing/mypy_requirements.txt
+++ b/examples/tools/typing/mypy_requirements.txt
@@ -20,8 +20,9 @@ mypy==0.750 \
     --hash=sha256:de9ec8dba773b78c49e7bec9a35c9b6fc5235682ad1fc2105752ae7c22f4b931 \
     --hash=sha256:f385a0accf353ca1bca4bbf473b9d83ed18d923fdb809d3a70a385da23e25b6a
     # via -r tools/typing/mypy_requirements.in
-mypy-extensions==0.4.4 \
-    --hash=sha256:c8b707883a96efe9b4bb3aaf0dcc07e7e217d7d8368eec4db4049ee9e142f4fd
+mypy-extensions==1.0.0 \
+    --hash=sha256:4392f6c0eb8a5668a69e23d168ffa70f0be9ccfd32b5cc2d26a34ae5b844552d \
+    --hash=sha256:75dbf8955dc00442a438fc4d0666508a9a97b6bd41aa2f0ffe9d2f2725af0782
     # via mypy
 typed-ast==1.4.3 \
     --hash=sha256:01ae5f73431d21eead5015997ab41afa53aa1fbe252f9da060be5dad2c730ace \
diff --git a/third_party/requirements.txt b/third_party/requirements.txt
index b83fec7..0538a78 100644
--- a/third_party/requirements.txt
+++ b/third_party/requirements.txt
@@ -20,8 +20,9 @@ mypy==0.790 \
     --hash=sha256:e97e9c13d67fbe524be17e4d8025d51a7dca38f90de2e462243ab8ed8a9178d1 \
     --hash=sha256:eea260feb1830a627fb526d22fbb426b750d9f5a47b624e8d5e7e004359b219c
     # via -r third_party/requirements.in
-mypy-extensions==0.4.4 \
-    --hash=sha256:c8b707883a96efe9b4bb3aaf0dcc07e7e217d7d8368eec4db4049ee9e142f4fd
+mypy-extensions==1.0.0 \
+    --hash=sha256:4392f6c0eb8a5668a69e23d168ffa70f0be9ccfd32b5cc2d26a34ae5b844552d \
+    --hash=sha256:75dbf8955dc00442a438fc4d0666508a9a97b6bd41aa2f0ffe9d2f2725af0782
     # via mypy
 typed-ast==1.4.3 \
     --hash=sha256:01ae5f73431d21eead5015997ab41afa53aa1fbe252f9da060be5dad2c730ace \