diff --git a/.travis.yml b/.travis.yml
index 7c781a6..6aa00a3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,7 @@ env:
       - PLAT=aarch64
       - NP_BUILD_DEP="numpy==1.17.3"
       - NP_TEST_DEP="numpy==1.17.3"
-      - CYTHON_BUILD_DEP="cython==0.29.21"
+      - CYTHON_BUILD_DEP="cython==0.29.24"
       - WHEELHOUSE_UPLOADER_USERNAME=travis-worker
       - TEST_DEPENDS="pytest pytest-xdist hypothesis"
       - TEST_DIR="tmp_for_test"
diff --git a/azure/posix.yml b/azure/posix.yml
index fe14454..b5f3ead 100644
--- a/azure/posix.yml
+++ b/azure/posix.yml
@@ -12,7 +12,7 @@ jobs:
       BUILD_COMMIT: "v1.3.3"
       PLAT: "x86_64"
       NP_BUILD_DEP: "numpy==1.17.3"
-      CYTHON_BUILD_DEP: "cython==0.29.21"
+      CYTHON_BUILD_DEP: "cython==0.29.24"
       NIGHTLY_BUILD_COMMIT: "master"
       NIGHTLY_BUILD: "false"
       TEST_DEPENDS: "pytest pytest-xdist hypothesis"
diff --git a/azure/windows.yml b/azure/windows.yml
index 142f5de..1112ed8 100644
--- a/azure/windows.yml
+++ b/azure/windows.yml
@@ -10,7 +10,7 @@ jobs:
     variables:
       BUILD_COMMIT: "v1.3.3"
       NP_BUILD_DEP: "1.17.3"
-      CYTHON_BUILD_DEP: "0.29.21"
+      CYTHON_BUILD_DEP: "0.29.24"
       NIGHTLY_BUILD_COMMIT: "master"
       NIGHTLY_BUILD: "false"
       PYTHON_ARCH: "x64"