diff --git a/stack/lamp.cfg b/stack/lamp.cfg
index c5745ba3cf536379128d78b6bc3f9a04933ff028..5976d75e3cdfb0d507ddaa2735d9a7059c73407f 100644
--- a/stack/lamp.cfg
+++ b/stack/lamp.cfg
@@ -48,3 +48,49 @@ eggs =
 #             Useful when [application] uses slapos.recipe.build or
 #             slapos.recipe.download rather than h.r.download.
 depends = ${apache-php:location}
+
+
+[networkcache]
+# Romain Courteaud + Sebastien Robin signature certificate
+signature-certificate-list =
+  -----BEGIN CERTIFICATE-----
+  MIIB4DCCAUkCADANBgkqhkiG9w0BAQsFADA5MQswCQYDVQQGEwJGUjEZMBcGA1UE
+  CBMQRGVmYXVsdCBQcm92aW5jZTEPMA0GA1UEChMGTmV4ZWRpMB4XDTExMDkxNTA5
+  MDAwMloXDTEyMDkxNTA5MDAwMlowOTELMAkGA1UEBhMCRlIxGTAXBgNVBAgTEERl
+  ZmF1bHQgUHJvdmluY2UxDzANBgNVBAoTBk5leGVkaTCBnzANBgkqhkiG9w0BAQEF
+  AAOBjQAwgYkCgYEApYZv6OstoqNzxG1KI6iE5U4Ts2Xx9lgLeUGAMyfJLyMmRLhw
+  boKOyJ9Xke4dncoBAyNPokUR6iWOcnPHtMvNOsBFZ2f7VA28em3+E1JRYdeNUEtX
+  Z0s3HjcouaNAnPfjFTXHYj4um1wOw2cURSPuU5dpzKBbV+/QCb5DLheynisCAwEA
+  ATANBgkqhkiG9w0BAQsFAAOBgQBCZLbTVdrw3RZlVVMFezSHrhBYKAukTwZrNmJX
+  mHqi2tN8tNo6FX+wmxUUAf3e8R2Ymbdbn2bfbPpcKQ2fG7PuKGvhwMG3BlF9paEC
+  q7jdfWO18Zp/BG7tagz0jmmC4y/8akzHsVlruo2+2du2freE8dK746uoMlXlP93g
+  QUUGLQ==
+  -----END CERTIFICATE-----
+  -----BEGIN CERTIFICATE-----
+  MIIEwAIBADANBgkqhkiG9w0BAQEFAASCBKowggSmAgEAAoIBAQDwyupMnruo3+Z2
+  1BBkQj+nCECu+TMI9s/0NVd73Hfst9GSr/eaZW8MJ6XNwyR/2DOkZs+1v97FBD9w
+  dT1Njg6WBF+Qavi5NU9D+XWOXNLQEJYIH1tEFbjcHKog4DplKOuOM59pBpVUak6Y
+  eZCoWXa3e7dNdv3jOUkqaTgG8Sv3tHetBTF2nSuj3M4ti66wV60Spo9L0BkeQl8j
+  h5qhr06aX0AYfrfHElWw4rvYz6ExIz4uP86/YlyktkI0DBNnI8uaOPKtgb8AzipF
+  b4wgWkwpmqCr/5+3DYFNIow2wkeq2XQKuC8um7EQXr3pDgCSEux5zb0sq7voyIhS
+  MIUIDQqXAgMBAAECggEBAKDIzdSltWcZQrmb9uoLdpdhIlfz3IkizU8jAyyY1ZdC
+  UvVg/LOjAZibLNKNeGTJiApCAHY7DVR+9qFwF6QetEyl1O4JD9YT677W5xFNmBMI
+  0DXSQk3fN1X66fsT3spHnaqRe+NUWwhIB/02R0qymlwAhzB5wSQlz147bgbsqVA3
+  bH6EuKLaGd0QSfAfp0ELqk0iz/K/TSIdH2W3UThB9setbLbYcmALDZ6ugUSqxHcn
+  8P9W8FUOONS68+wERL4cBAQ97SJLgOkV5HWWDd2GmP8Odh8KPJ8yuMeUrwuuFJb4
+  pUsICfBSJrTrdDli97ocuutwgSKmDuocTk3Ble7qCHECgYEA/dyzt1TzXN+V3J6n
+  L/yOznsd6gYOwriKiugYnjM6RMsPBAdb2OdD6idtQQEBkL5LH5jNy+0yQco1oqoV
+  HxZeqpGvQKPjHPLWUDNgHa880p3aAIr+y0lb5HfXPUZJscGanodJg8zEo4/6o3lh
+  34mXRTXhqWt11DulIspTpJw4gckCgYEA8tIJchWeqkkQff7l8wlLQFcMjMmBqtDO
+  UDMWWo3OV/MmKNGpyXFnRoyZf5MY03CZ7vskMmGYrG4UoRDhkX1uFjccFqTTtt8B
+  gEbY6DwNpckKLoyO99vwqeH2ZH6K2PsHJxBPHW5MyHE+mqyQP1peONisI73ke2MD
+  HTaSiwVGWV8CgYEA4bp3StMMuk5NESk5fB/UU6GBze+o/FffSPhru2/NphHwviJU
+  9x9ccj6wlRZx7+RlJClZBLVa9Mj6vDMEKOpZLs3vyUhwz/LVweaM1phVOuoFSGpP
+  eS83uIUfLGrtaFPASqn9ImbXiqChuu5ZqszLZ00r5NuaoCaRBchma35FeJECgYEA
+  kEAQlnKbiIPRRVhpGMFbsARGk1ieLHDRL7m5vN/jRkJPWA599ArnlHSwN6aWJ/4L
+  pHoTnc522XCn1qtlpX3DKXVhvV372/aNOLxd3VDXtrZA0zhzMnG5feKb8kVujMpM
+  DHvW1CATgzwrOc3r/4ba1KB7WtxTYK2ISxGBaw8eJLcCgYEAr12H7C22rKbySQdr
+  unCbkFS1U3D5rQrpneWzN3DkFySSMOwref/l1VJMJh+F5p2s8VQxlC14+rmNh3o3
+  pLK+jHoGZ00q15vsH4xKTUTHgyUOQ8e/FsrY9pwadT6iw529B6C+ZNzqRnRGfbZr
+  teOUBdScIHhUmQDkNALjEmOyYNI=
+  -----END CERTIFICATE-----