diff --git a/CHANGELIST.md b/CHANGELIST.md
index 094c7968..bbc25295 100644
--- a/CHANGELIST.md
+++ b/CHANGELIST.md
@@ -56,6 +56,7 @@
 - Relax PS3CFW output filename requirements
 - Fix bracket formatting from last commit
 - Fix speed dropdown with Redumper
+- Update redumper to build 585
 
 ### 3.3.0 (2025-01-03)
 
diff --git a/publish-nix.sh b/publish-nix.sh
index 97e08753..7c2154a2 100755
--- a/publish-nix.sh
+++ b/publish-nix.sh
@@ -100,12 +100,12 @@ function download_programs() {
 
     # Redumper
     DL_MAP["Redumper_linux-arm64"]=""
-    DL_MAP["Redumper_linux-x64"]="https://github.com/superg/redumper/releases/download/build_565/redumper-2025.05.04_build565-Linux64.zip"
-    DL_MAP["Redumper_osx-arm64"]="https://github.com/superg/redumper/releases/download/build_565/redumper-2025.05.04_build565-Darwin64.zip"
-    DL_MAP["Redumper_osx-x64"]="https://github.com/superg/redumper/releases/download/build_565/redumper-2025.05.04_build565-Darwin64.zip"
+    DL_MAP["Redumper_linux-x64"]="https://github.com/superg/redumper/releases/download/build_585/redumper-2025.05.21_build585-Linux64.zip"
+    DL_MAP["Redumper_osx-arm64"]="https://github.com/superg/redumper/releases/download/build_585/redumper-2025.05.21_build585-Darwin64.zip"
+    DL_MAP["Redumper_osx-x64"]="https://github.com/superg/redumper/releases/download/build_585/redumper-2025.05.21_build585-Darwin64.zip"
     DL_MAP["Redumper_win-arm64"]=""
-    DL_MAP["Redumper_win-x86"]="https://github.com/superg/redumper/releases/download/build_565/redumper-2025.05.04_build565-Windows32.zip"
-    DL_MAP["Redumper_win-x64"]="https://github.com/superg/redumper/releases/download/build_565/redumper-2025.05.04_build565-Windows64.zip"
+    DL_MAP["Redumper_win-x86"]="https://github.com/superg/redumper/releases/download/build_585/redumper-2025.05.21_build585-Windows32.zip"
+    DL_MAP["Redumper_win-x64"]="https://github.com/superg/redumper/releases/download/build_585/redumper-2025.05.21_build585-Windows64.zip"
 
     # Download and extract files
     echo "===== Downloading Required Programs ====="
diff --git a/publish-win.ps1 b/publish-win.ps1
index 854ba83e..8ed77019 100644
--- a/publish-win.ps1
+++ b/publish-win.ps1
@@ -89,12 +89,12 @@ function Download-Programs {
 
         # Redumper
         "Redumper_linux-arm64" = ""
-        "Redumper_linux-x64"   = "https://github.com/superg/redumper/releases/download/build_565/redumper-2025.05.04_build565-Linux64.zip"
-        "Redumper_osx-arm64"   = "https://github.com/superg/redumper/releases/download/build_565/redumper-2025.05.04_build565-Darwin64.zip"
-        "Redumper_osx-x64"     = "https://github.com/superg/redumper/releases/download/build_565/redumper-2025.05.04_build565-Darwin64.zip"
+        "Redumper_linux-x64"   = "https://github.com/superg/redumper/releases/download/build_585/redumper-2025.05.21_build585-Linux64.zip"
+        "Redumper_osx-arm64"   = "https://github.com/superg/redumper/releases/download/build_585/redumper-2025.05.21_build585-Darwin64.zip"
+        "Redumper_osx-x64"     = "https://github.com/superg/redumper/releases/download/build_585/redumper-2025.05.21_build585-Darwin64.zip"
         "Redumper_win-arm64"   = ""
-        "Redumper_win-x86"     = "https://github.com/superg/redumper/releases/download/build_565/redumper-2025.05.04_build565-Windows32.zip"
-        "Redumper_win-x64"     = "https://github.com/superg/redumper/releases/download/build_565/redumper-2025.05.04_build565-Windows64.zip"
+        "Redumper_win-x86"     = "https://github.com/superg/redumper/releases/download/build_585/redumper-2025.05.21_build585-Windows32.zip"
+        "Redumper_win-x64"     = "https://github.com/superg/redumper/releases/download/build_585/redumper-2025.05.21_build585-Windows64.zip"
     }
 
     # Download and extract files