diff --git a/pkgs/os-specific/linux/kernel/linux-4.20.nix b/pkgs/os-specific/linux/kernel/linux-4.20.nix
deleted file mode 100644
index 24db21a536d6..000000000000
--- a/pkgs/os-specific/linux/kernel/linux-4.20.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-{ stdenv, buildPackages, fetchurl, perl, buildLinux, modDirVersionArg ? null, ... } @ args:
-
-with stdenv.lib;
-
-buildLinux (args // rec {
-  version = "4.20.17";
-
-  # modDirVersion needs to be x.y.z, will automatically add .0 if needed
-  modDirVersion = if (modDirVersionArg == null) then concatStrings (intersperse "." (take 3 (splitString "." "${version}.0"))) else modDirVersionArg;
-
-  # branchVersion needs to be x.y
-  extraMeta.branch = concatStrings (intersperse "." (take 2 (splitString "." version)));
-
-  src = fetchurl {
-    url = "mirror://kernel/linux/kernel/v4.x/linux-${version}.tar.xz";
-    sha256 = "0glabx4v5pgyfwslllbv2qaz5ah492sq1w7bbz0x905r55b284fh";
-  };
-} // (args.argsOverride or {}))
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 018a243e50b7..458e5491b09b 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2428,7 +2428,7 @@ in
   duo-unix = callPackage ../tools/security/duo-unix { };
 
   duplicacy = callPackage ../tools/backup/duplicacy { };
-  
+
   duplicati = callPackage ../tools/backup/duplicati { };
 
   duplicity = callPackage ../tools/backup/duplicity {
@@ -14765,13 +14765,6 @@ in
       ];
   };
 
-  linux_4_20 = callPackage ../os-specific/linux/kernel/linux-4.20.nix {
-    kernelPatches =
-      [ kernelPatches.bridge_stp_helper
-        kernelPatches.modinst_arg_list_too_long
-      ];
-  };
-
   linux_5_0 = callPackage ../os-specific/linux/kernel/linux-5.0.nix {
     kernelPatches =
       [ kernelPatches.bridge_stp_helper
@@ -14974,7 +14967,6 @@ in
   linuxPackages_4_9 = recurseIntoAttrs (linuxPackagesFor pkgs.linux_4_9);
   linuxPackages_4_14 = recurseIntoAttrs (linuxPackagesFor pkgs.linux_4_14);
   linuxPackages_4_19 = recurseIntoAttrs (linuxPackagesFor pkgs.linux_4_19);
-  linuxPackages_4_20 = recurseIntoAttrs (linuxPackagesFor pkgs.linux_4_20);
   linuxPackages_5_0 = recurseIntoAttrs (linuxPackagesFor pkgs.linux_5_0);
   # When adding to this list:
   # - Update linuxPackages_latest to the latest version