diff --git a/sys-kernel/backbone-sources/Manifest b/sys-kernel/backbone-sources/Manifest
index 44cce184..86341673 100644
--- a/sys-kernel/backbone-sources/Manifest
+++ b/sys-kernel/backbone-sources/Manifest
@@ -6,7 +6,7 @@ DIST linux-backbone-3.14.51.tar.gz 121656437 SHA256 a875acd7ace2f30a6ff480ac6e9e
 DIST linux-backbone-3.15.10-r3.tar.gz 122163527 SHA256 56f6e17d8d232647109f5bb00835b22083917e4462147edc109d45688c45c7e4 SHA512 f4813da87203219f1a23f3162590729093d80d04ccc4ba71e4993319a99f886098d3ddbf143a46e9ad2dfd12c76125916ad40ad55807413274b21ddf97045060 WHIRLPOOL c469436bc83c52fd4d9b08a9f0f9bd07b94799848c63aaa45067816fa5b4478bc8e3427e6d0dfbdd8d0ffd000a82ea6bf909bb4d3c0c092412d377f6404acd63
 DIST linux-backbone-3.16.7-r1.tar.gz 123534688 SHA256 22d808ef84221336d2250f4e7b130341e8b1cbc9486fab9f0866ba90fa5e047e SHA512 f271cf3b78a5f6383bb5aa3324108e0129170d77cb2d6d8a2ec07d4ea34ac4dbdae2d768ce0f71424f5d12302963751b14cbe8967a6796808f5d65316934e8c7 WHIRLPOOL 1832b96ae443ec0481f756c40f95f3c026d583e6d6e6d1973a0b57d6f75bae7f990ac2741f446b74e82843e10fd080a4e18ff5b28379289b96f6af7829e89756
 DIST linux-backbone-3.17.8-r1.tar.gz 123149827 SHA256 008d3a9baad609800c9a60f018940c87298ce1c403c2c9f1cdfe003a89fa662e SHA512 af6648d0363e9284c08328b6e788e83b3909618d6ab7fe8088c9e7327dd823e9454e153f90154adc2741dfb7c43e6636a6ab0127973f4221fc02e60933875b9f WHIRLPOOL 0e8ca151d5ea1b2a2a7212fb761512fd5e95b0d77cd9498c1155e3addd595a820e87e6f280191d3ac9e1d609af0b4242b54c9a378f360d8cbf7ef387b4bd264a
-DIST linux-backbone-3.18.20.tar.gz 124094690 SHA256 90191a75b067d89ff3529d1602271c595881926c1cbc344f6499798e10f3af37 SHA512 f311996abc57efb7afd19bd8725acc77804bc7fd4390e5bf8438b7657d6185fb66bac2104bf894686ab147adc1a8a3cfca8a6b732bb42f26f49a7156821a846a WHIRLPOOL 5513856759b44a4f5ea43ccab1ed9f14553362be116d808308bf746a4d35a4dc57ebdb8f35325a5d53d59a3a81f6c3c0c2e63058cd50023192b3813f2af668da
+DIST linux-backbone-3.18.21.tar.gz 124098470 SHA256 58de883075925131132bda973774fa4a1d1f621eaaede978dd9dfd94362f0d2a SHA512 90e45fe7e0c042b87a7455bb350e907786a2edb1fe56f2e9ab61131d367b68de256fa3732ad597c3fc915e220119ef43e807a7315bec9e2d44e190bed21de645 WHIRLPOOL d471aa23e4211b5d9d6656601d7c319afc34fd3ed332ecdbcc5b7a813a513fad9578852a1d7cc2eaa03c2f54c9ac08fc71927a801563586557be6320da53da1e
 DIST linux-backbone-3.19.8.tar.gz 124864423 SHA256 ca7a7af7d99605b19186b72f65ddd5bd0e1f349195e8c05667406b4f68753abe SHA512 e3bf8cf1fdaeaf5d95113e02fdd9e98d1e7793b3cecb6eb4ad9cd028b14966e81c318e3b154bdf52a9bc89bef0e8338196d9a89bd20dffe5c6bfc90c7a3b63ed WHIRLPOOL 5fda40be832388b0662fbbe3f0dd6c8c958d9764301748b31295056cb55965fd15a4b4c002581b7d41eb2e9e0eae2fb1358575fc4531718865aceada7f39db9d
 DIST linux-backbone-4.0.9-r2.tar.gz 126204960 SHA256 31222005da82dbb5c98fc8cc6f4a25e8e73d38a799e91bd3e5f8d7891b94080f SHA512 7f1b804b9067a6aaa471434bfbb352902ebde216c7d96a22c8155059f02f3a6811f0be15bfbeb68bba4b0fc334e0d5fb88ff0bf32aa7ed52aec0e8d95d46744a WHIRLPOOL 979088d3e6602453f9d69a3e1a882d8ad69f1e25305d3a348697056ef91e844e5f5adf4ce780e91e326fe4d2b54378285b97f77562dea77d7e62d76b0f8befaf
 DIST linux-backbone-4.1.6-r1.tar.gz 127357592 SHA256 467721f3dec969ca870d5ad3a38e7f12cf2cb7d7c0e1ead664bceb2a8e997bf6 SHA512 0b1c5ca48f04f70a4586e8fe239a08159fd4d88ddab6ca54eec250091fb8f384768ba951991bf29e3bd490b631b093935377e2f78ebf85c8ee58a87362c4f3ef WHIRLPOOL 42750d953d61809c9d81b919e2efd5b47a0a7fedb2a359490ae11bdf58a6d2a1a03ed8a561b2950d70498b04f621b0d31bd7884308559a101db7242dfc40fe7e
diff --git a/sys-kernel/backbone-sources/backbone-sources-3.18.20.ebuild b/sys-kernel/backbone-sources/backbone-sources-3.18.21.ebuild
similarity index 100%
rename from sys-kernel/backbone-sources/backbone-sources-3.18.20.ebuild
rename to sys-kernel/backbone-sources/backbone-sources-3.18.21.ebuild