diff --git a/bazel/toolchains/linux_kernel.bzl b/bazel/toolchains/linux_kernel.bzl
index 67d56abd401..d9594606f0e 100644
--- a/bazel/toolchains/linux_kernel.bzl
+++ b/bazel/toolchains/linux_kernel.bzl
@@ -9,44 +9,45 @@ def kernel_rpms():
     http_file(
         name = "kernel_lts",
         urls = [
-            "https://cdn.confidential.cloud/constellation/cas/sha256/b1f40fcc493189045ae93124968d185c8b3351433b9e0f49cfdb49998f5efa17",
-            "https://cdn.confidential.cloud/constellation/kernel/6.1.90-100.constellation/kernel-6.1.90-100.constellation.fc38.x86_64.rpm",
+            "https://cdn.confidential.cloud/constellation/cas/sha256/dcc678582767da41a831c3fc0a88ec857b8df1b69856009072f1b81ebe6ebbf4",
+            "https://cdn.confidential.cloud/constellation/kernel/6.6.30-100.constellation/kernel-6.6.30-100.constellation.fc40.x86_64.rpm",
         ],
         downloaded_file_path = "kernel-lts.rpm",
-        sha256 = "b1f40fcc493189045ae93124968d185c8b3351433b9e0f49cfdb49998f5efa17",
+        sha256 = "dcc678582767da41a831c3fc0a88ec857b8df1b69856009072f1b81ebe6ebbf4",
     )
     http_file(
         name = "kernel_core_lts",
         urls = [
-            "https://cdn.confidential.cloud/constellation/cas/sha256/124f418f63ee7453e220448d372d5fd9727d42e5236da22d98e33fabc4fcd5dc",
-            "https://cdn.confidential.cloud/constellation/kernel/6.1.90-100.constellation/kernel-core-6.1.90-100.constellation.fc38.x86_64.rpm",
+            "https://cdn.confidential.cloud/constellation/cas/sha256/eef221be0f76502afd5c2ee9679561565b2605ba91c35e5827522c05ccbaf7f7",
+            "https://cdn.confidential.cloud/constellation/kernel/6.6.30-100.constellation/kernel-core-6.6.30-100.constellation.fc40.x86_64.rpm",
         ],
         downloaded_file_path = "kernel-core-lts.rpm",
-        sha256 = "124f418f63ee7453e220448d372d5fd9727d42e5236da22d98e33fabc4fcd5dc",
+        sha256 = "eef221be0f76502afd5c2ee9679561565b2605ba91c35e5827522c05ccbaf7f7",
     )
     http_file(
         name = "kernel_modules_lts",
         urls = [
-            "https://cdn.confidential.cloud/constellation/cas/sha256/8aef6f1e07ddfc57b0a0e2c9a23eae392b3c628770492c21a762cbab941c6923",
-            "https://cdn.confidential.cloud/constellation/kernel/6.1.90-100.constellation/kernel-modules-6.1.90-100.constellation.fc38.x86_64.rpm",
+            "https://cdn.confidential.cloud/constellation/cas/sha256/7865333af2d9fcf8205d791a1ef53ada967d47b4e1aafedc24e22a37abf0ebca",
+            "https://cdn.confidential.cloud/constellation/kernel/6.6.30-100.constellation/kernel-modules-6.6.30-100.constellation.fc40.x86_64.rpm",
         ],
         downloaded_file_path = "kernel-modules-lts.rpm",
-        sha256 = "8aef6f1e07ddfc57b0a0e2c9a23eae392b3c628770492c21a762cbab941c6923",
+        sha256 = "7865333af2d9fcf8205d791a1ef53ada967d47b4e1aafedc24e22a37abf0ebca",
     )
     http_file(
         name = "kernel_modules_core_lts",
         urls = [
-            "https://cdn.confidential.cloud/constellation/cas/sha256/2a8865452cd9680da17834bc3c1b323779f24bb70d01be9cd5df2b02bde815cb",
-            "https://cdn.confidential.cloud/constellation/kernel/6.1.90-100.constellation/kernel-modules-core-6.1.90-100.constellation.fc38.x86_64.rpm",
+            "https://cdn.confidential.cloud/constellation/cas/sha256/570f33c382d22560be3a9152184b938d197caee4dff5736038efd198b86fc88a",
+            "https://cdn.confidential.cloud/constellation/kernel/6.6.30-100.constellation/kernel-modules-core-6.6.30-100.constellation.fc40.x86_64.rpm",
         ],
         downloaded_file_path = "kernel-modules-core-lts.rpm",
-        sha256 = "2a8865452cd9680da17834bc3c1b323779f24bb70d01be9cd5df2b02bde815cb",
+        sha256 = "570f33c382d22560be3a9152184b938d197caee4dff5736038efd198b86fc88a",
     )
 
     # mainline kernel
     http_file(
         name = "kernel_mainline",
         urls = [
+            "https://cdn.confidential.cloud/constellation/cas/sha256/6eaec29870e6549d95a93b72ea10715507db84b851c68c0d75e44e4c20f895f2",
             "https://kojipkgs.fedoraproject.org/packages/kernel/6.8.9/300.fc40/x86_64/kernel-6.8.9-300.fc40.x86_64.rpm",
         ],
         downloaded_file_path = "kernel-mainline.rpm",
@@ -55,6 +56,7 @@ def kernel_rpms():
     http_file(
         name = "kernel_core_mainline",
         urls = [
+            "https://cdn.confidential.cloud/constellation/cas/sha256/910fd35209f7dc8185e88dddeaccf6158dd63ad9fd469ef3dc81b96840ef28eb",
             "https://kojipkgs.fedoraproject.org/packages/kernel/6.8.9/300.fc40/x86_64/kernel-core-6.8.9-300.fc40.x86_64.rpm",
         ],
         downloaded_file_path = "kernel-core-mainline.rpm",
@@ -63,6 +65,7 @@ def kernel_rpms():
     http_file(
         name = "kernel_modules_mainline",
         urls = [
+            "https://cdn.confidential.cloud/constellation/cas/sha256/b8de20433c68d2fe0ca6625e25f314aba36a9327592db8b1478b97bb50521149",
             "https://kojipkgs.fedoraproject.org/packages/kernel/6.8.9/300.fc40/x86_64/kernel-modules-6.8.9-300.fc40.x86_64.rpm",
         ],
         downloaded_file_path = "kernel-modules-mainline.rpm",
@@ -71,6 +74,7 @@ def kernel_rpms():
     http_file(
         name = "kernel_modules_core_mainline",
         urls = [
+            "https://cdn.confidential.cloud/constellation/cas/sha256/8ecd8e96483810d18e04a20cd8ecef46f27bff0fbb54f23e67adb813828b3cec",
             "https://kojipkgs.fedoraproject.org/packages/kernel/6.8.9/300.fc40/x86_64/kernel-modules-core-6.8.9-300.fc40.x86_64.rpm",
         ],
         downloaded_file_path = "kernel-modules-core-mainline.rpm",