diff --git a/npins/sources.json b/npins/sources.json
index 1ee3041..ff2fa21 100644
--- a/npins/sources.json
+++ b/npins/sources.json
@@ -22,9 +22,9 @@
         "repo": "attic"
       },
       "branch": "main",
-      "revision": "e6bedf1869f382cfc51b69848d6e09d51585ead6",
-      "url": "https://github.com/zhaofengli/attic/archive/e6bedf1869f382cfc51b69848d6e09d51585ead6.tar.gz",
-      "hash": "0jcklg6rl83sxgv22rk8cx98kgh6a8iwbajplmg009bxnf4hbq9q"
+      "revision": "fbe252a5c21febbe920c025560cbd63b20e24f3b",
+      "url": "https://github.com/zhaofengli/attic/archive/fbe252a5c21febbe920c025560cbd63b20e24f3b.tar.gz",
+      "hash": "1dpsqf1m8vklhgy2ganikihdj0fp4vk34r0ajd4jvq8pxvhcmlwz"
     },
     "dgnum-retired": {
       "type": "Git",
@@ -127,20 +127,20 @@
     "nixos-23.11": {
       "type": "Channel",
       "name": "nixos-23.11",
-      "url": "https://releases.nixos.org/nixos/23.11/nixos-23.11.2962.b8dd8be3c790/nixexprs.tar.xz",
-      "hash": "053dwx7smszz3a0khbm6zvf9pvy5xz1ifdk9jx6gz5cmwjab0gmp"
+      "url": "https://releases.nixos.org/nixos/23.11/nixos-23.11.3326.d2003f2223cb/nixexprs.tar.xz",
+      "hash": "02ln864f3p0qy7rg9h5fdsrvkf81rh5nrj4w5cx5p7yf8hq6r1q1"
     },
     "nixos-unstable": {
       "type": "Channel",
       "name": "nixos-unstable",
-      "url": "https://releases.nixos.org/nixos/unstable/nixos-24.05pre572380.842d9d80cfd4/nixexprs.tar.xz",
-      "hash": "0kyg49mm4hja6qv6kd1nl50i9ixzmvzyhsg8nfz5a4iaad0aq4d8"
+      "url": "https://releases.nixos.org/nixos/unstable/nixos-24.05pre573276.bbe7d8f876fb/nixexprs.tar.xz",
+      "hash": "0f7ln6djsy98kj7xhxqk8c6n8vnfb340fxck15364qsbj8ispqil"
     },
     "nixpkgs": {
       "type": "Channel",
       "name": "nixpkgs-unstable",
-      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-24.05pre572676.b06ff4bf8f4a/nixexprs.tar.xz",
-      "hash": "1alh0waf9hjhxqnxwkmc6g1fq9h1m498g269yncdnhhkiglg73kx"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-24.05pre573406.e5d1c87f5813/nixexprs.tar.xz",
+      "hash": "020gpd0szsiwf70idxl7bvr4pzplnns2463a9n4z2i8si9qr66vb"
     },
     "wp4nix": {
       "type": "Git",
@@ -150,9 +150,9 @@
         "server": "https://git.helsinki.tools/"
       },
       "branch": "master",
-      "revision": "0587d597ea0f047f833566a770d14ca122ffe69d",
-      "url": "https://git.helsinki.tools/api/v4/projects/helsinki-systems%2Fwp4nix/repository/archive.tar.gz?sha=0587d597ea0f047f833566a770d14ca122ffe69d",
-      "hash": "0vfml64lwn00pllzs3fcklhphny2i3dbg5vgirba02i1hyc2q6mp"
+      "revision": "422475fa80d0929f3c3012da4320493ea5c20440",
+      "url": "https://git.helsinki.tools/api/v4/projects/helsinki-systems%2Fwp4nix/repository/archive.tar.gz?sha=422475fa80d0929f3c3012da4320493ea5c20440",
+      "hash": "05hn1j6x9qrp1shnw8a96rm833f1nzgwdgcdgrgqlvqa4ymm1kks"
     },
     "www-eleves": {
       "type": "Git",