diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-5.8.16.ebuild b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-5.9.1.ebuild
similarity index 100%
rename from sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-5.8.16.ebuild
rename to sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-5.9.1.ebuild
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/coreos-modules-5.8.16.ebuild b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/coreos-modules-5.9.1.ebuild
similarity index 100%
rename from sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/coreos-modules-5.8.16.ebuild
rename to sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/coreos-modules-5.9.1.ebuild
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/amd64_defconfig-5.8 b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/amd64_defconfig-5.9
similarity index 100%
rename from sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/amd64_defconfig-5.8
rename to sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/amd64_defconfig-5.9
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/arm64_defconfig-5.8 b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/arm64_defconfig-5.9
similarity index 100%
rename from sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/arm64_defconfig-5.8
rename to sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/arm64_defconfig-5.9
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-5.8 b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-5.9
similarity index 100%
rename from sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-5.8
rename to sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-5.9
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/Manifest b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/Manifest
index 21511c16ca..9cfacfdd07 100644
--- a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/Manifest
+++ b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/Manifest
@@ -1,2 +1,2 @@
-DIST linux-5.8.tar.xz 114459324 BLAKE2B 7bd97f8fa4527840754434414c07283e89731dc8ebb1e95fa5bc1469a60af1122582c0d3b6e262e77882f023190068df3537bd8b65964b3caa820bb2c8e579c7 SHA512 45a53ecf351096ef6e98242cca4228b8da9b9139ecc6963695791ea6fb7a9484a4e1c19dcca7ce7cbfdfa49de0451b70973bb078f12bdae9cbaddbc3f8092556
-DIST patch-5.8.16.xz 574536 BLAKE2B 03756e7ca40fa540a2a0ce81613781b1f2cfd65991a38618a362c6a599d8450ed0ab1331b797ccf529b56f504ee6ead4a120ef8cd1497832c1d5a1bf54c429cb SHA512 b9f00c9aa0998e1db72ef2f3301c0082ec21e6d439394ea61876312634713ece2ca9ecce70a00af0c618dc6acbae4efb7a1b75df4d4564a672e6b8439ef13f97
+DIST linux-5.9.tar.xz 115507140 BLAKE2B e8d11472d63a9f8409ca12a2e8c97c6963a3d4516b5a398b627d6ece565584526f9b5a1377a2fa4bd184c09c7db94c987428bc5d52df0c788464a67e9e8d6dcb SHA512 d3d92ce4246bad74c9a784212f160d98449b1e8793970c2c308276568d852b8effe0528686bdb87d55d691f09a826abf7938d69bdd4759ce65ddd5c05ffe4eca
+DIST patch-5.9.1.xz 5652 BLAKE2B 02daa4610b58b5af726b84788702ece2db278c8f2afc0e2de11c465d5e827e745cbb952fc3f55074833d8cf31b4d05f5ae1b2a4ae324b171950090fbc712e3de SHA512 0e0738df04d306c141ac950f0ff95eaea06c65024a30b4f1e3b5f3867b5b022b3ed36898302c26046d1ec1567eb314474fcb2a6aac6d4bcd79d3ba9266d9e244
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/coreos-sources-5.8.16.ebuild b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/coreos-sources-5.9.1.ebuild
similarity index 98%
rename from sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/coreos-sources-5.8.16.ebuild
rename to sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/coreos-sources-5.9.1.ebuild
index 3d782ccffa..d4e6d60b41 100644
--- a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/coreos-sources-5.8.16.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/coreos-sources-5.9.1.ebuild
@@ -8,7 +8,7 @@ ETYPE="sources"
 # Final releases should be versioned L.M.N, even for N == 0
 
 # Only needed for RCs
-K_BASE_VER="5.8"
+K_BASE_VER="5.9"
 
 inherit kernel-2
 EXTRAVERSION="-flatcar"
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/files/5.8/z0001-kbuild-derive-relative-path-for-srctree-from-CURDIR.patch b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/files/5.9/z0001-kbuild-derive-relative-path-for-srctree-from-CURDIR.patch
similarity index 100%
rename from sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/files/5.8/z0001-kbuild-derive-relative-path-for-srctree-from-CURDIR.patch
rename to sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/files/5.9/z0001-kbuild-derive-relative-path-for-srctree-from-CURDIR.patch
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/files/5.8/z0002-tools-objtool-Makefile-Don-t-fail-on-fallthrough-wit.patch b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/files/5.9/z0002-tools-objtool-Makefile-Don-t-fail-on-fallthrough-wit.patch
similarity index 100%
rename from sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/files/5.8/z0002-tools-objtool-Makefile-Don-t-fail-on-fallthrough-wit.patch
rename to sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/files/5.9/z0002-tools-objtool-Makefile-Don-t-fail-on-fallthrough-wit.patch