diff --git a/packages/default.nix b/packages/default.nix
index c783a73..b5c4559 100644
--- a/packages/default.nix
+++ b/packages/default.nix
@@ -31,8 +31,8 @@
       cardano-cli = packages."cardano-cli-8.1.1";
       cardano-node = packages."cardano-node-8.1.1";
       cardano-configurations = packages."cardano-configurations-8.1.1";
-      ogmios = packages."ogmios-6.0.3";
-      kupo = packages."kupo-2.6.1";
+      ogmios = packages."ogmios-6.5.0";
+      kupo = packages."kupo-2.9.0";
     };
   };
 }
diff --git a/packages/kupo.nix b/packages/kupo.nix
index d2b0e83..fd96de2 100644
--- a/packages/kupo.nix
+++ b/packages/kupo.nix
@@ -5,18 +5,24 @@
     lib,
     ...
   }: let
-    truncateVersion = version: builtins.head (builtins.match "([0-9]+\\.[0-9]+).*" version);
-    mkUrl = version: variant: "https://github.com/CardanoSolutions/kupo/releases/download/v${truncateVersion version}/kupo-${version}-${variant}.tar.gz";
+    truncateVersion = version: builtins.head (builtins.match "v?([0-9]+\\.[0-9]+).*" version);
+    mkUrl = version: variant: archive: "https://github.com/CardanoSolutions/kupo/releases/download/v${truncateVersion version}/kupo-${version}-${variant}.${archive}";
     releases = {
+      "2.9.0" = {
+        "x86_64-linux" = {
+          url = mkUrl "v2.9.0" "x86_64-linux" "zip";
+          hash = "sha256-sEfaFPph1qBuPrxQzFeTKU/9i9w0KF/v7GpxxmorPWQ=";
+        };
+      };
       "2.8.0" = {
         "x86_64-linux" = {
-          url = mkUrl "2.8.0" "amd64-Linux";
+          url = mkUrl "2.8.0" "amd64-Linux" "tar.gz";
           hash = "sha256-k6js0R0psyeHnM6q0e4slu4ESXm1FMiVRO2JUlsnlHY=";
         };
       };
       "2.6.1" = {
         "x86_64-linux" = {
-          url = mkUrl "2.6.1" "amd64-Linux";
+          url = mkUrl "2.6.1" "amd64-Linux" "tar.gz";
           hash = "sha256-pK+1ncKirqoTcC42pR5x0Oc9xXCAm2ajt9oRWZjNeyQ=";
         };
       };
diff --git a/packages/ogmios.nix b/packages/ogmios.nix
index 14824aa..06bfc68 100644
--- a/packages/ogmios.nix
+++ b/packages/ogmios.nix
@@ -7,6 +7,12 @@
   }: let
     mkUrl = version: system: "https://github.com/CardanoSolutions/ogmios/releases/download/v${version}/ogmios-v${version}-${system}.zip";
     releases = {
+      "6.5.0" = {
+        "x86_64-linux" = {
+          url = mkUrl "6.5.0" "x86_64-linux";
+          hash = "sha256-C7vwUefYXCXhnfIUt/Kmj3/f4cd3IogAZxaBtDftUOU=";
+        };
+      };
       "6.4.0" = {
         "x86_64-linux" = {
           url = mkUrl "6.4.0" "x86_64-linux";