diff --git a/pkgs/applications/blockchains/bitcoin/default.nix b/pkgs/applications/blockchains/bitcoin/default.nix
index 5f49d28d97b8..9b9ae869e861 100644
--- a/pkgs/applications/blockchains/bitcoin/default.nix
+++ b/pkgs/applications/blockchains/bitcoin/default.nix
@@ -30,10 +30,9 @@
   builderKeys ? [
     "152812300785C96444D3334D17565732E08E5E41" # achow101.gpg
     "9EDAFF80E080659604F4A76B2EBB056FD847F8A7" # Emzy.gpg
-    # "6B002C6EA3F91B1B0DF0C9BC8F617F1200A6D25C" # glozow.gpg (not signed 31.0)
     "D1DBF2C4B96F2DEBF4C16654410108112E7EA81F" # hebasto.gpg
-    # "71A3B16735405025D447E8F274810B012346C9A6" # laanwj.gpg (not signed 31.0)
-    "67AA5B46E7AF78053167FE343B8F814A784218F8"
+    # "71A3B16735405025D447E8F274810B012346C9A6" # laanwj.gpg (not signed 31.1)
+    "67AA5B46E7AF78053167FE343B8F814A784218F8" # willcl-ark.gpg
   ],
 }:
 
@@ -46,14 +45,14 @@ let
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = if withGui then "bitcoin" else "bitcoind";
-  version = "31.0";
+  version = "31.1";
 
   src = fetchurl {
     urls = [
       "https://bitcoincore.org/bin/bitcoin-core-${finalAttrs.version}/bitcoin-${finalAttrs.version}.tar.gz"
     ];
     # hash retrieved from signed SHA256SUMS
-    sha256 = "0ba0ef5eea3aefd96cc1774be274c3d594812cfac0988809d706738bb067b3e3";
+    sha256 = "50411d5b43c7e4c90099394759eb6c2add6e7c2dbe728840893d638b6fc6afc9";
   };
 
   nativeBuildInputs = [
@@ -93,12 +92,12 @@ stdenv.mkDerivation (finalAttrs: {
 
       checksums = fetchurl {
         url = "https://bitcoincore.org/bin/bitcoin-core-${finalAttrs.version}/SHA256SUMS";
-        hash = "sha256-w/4sIOBYR1d/YzzMqwzH6wRHOPQnNg8x7yS96+eWk8g=";
+        hash = "sha256-5jAo0Lsz0iyEdHnXOGa+jBFCJGkRdlwAXvv2EbZF5wY=";
       };
 
       signatures = fetchurl {
         url = "https://bitcoincore.org/bin/bitcoin-core-${finalAttrs.version}/SHA256SUMS.asc";
-        hash = "sha256-hkztGd2fUel7JJbe9RGSfJXGozhb085XvmqPjks96l4=";
+        hash = "sha256-wi4TibZR36L3EDReI/OtxS1OOz2tjteXen4p1VxVmV8=";
       };
 
       verifyBuilderKeys =