diff --git a/CHANGELOG.md b/CHANGELOG.md
index 20ef755c05fea102f38f65b63f856b6c3d45558b..6b447be92a70635e7b9bcd021fbdcf33a087eacb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,8 @@ release.
 
 ## [Unreleased]
 
+## [9.0.0] - 09-25-2024
+
 ### Added
 - Added TOVECT output parameter which generate a geospatial CSV file with a VRT metadata sidecar file [#5571](https://github.com/DOI-USGS/ISIS3/issues/5571)  
 - Added Vectorize to ProcessGroundPolygon library
diff --git a/code.json b/code.json
index 95af01759e93244898944e5009dd83a0b11ee460..def94e5c7d43bf61b8e3e5dfcf5c2d89565abd60 100644
--- a/code.json
+++ b/code.json
@@ -91,7 +91,7 @@
     "name": "ISIS3",
     "organization": "U.S. Geological Survey",
     "description": "GitHub code repository for the Integrated Software for Imagers and Spectrometers (ISIS)",
-    "version": "8.3.0",
+    "version": "9.0.0_rc1",
     "status": "Production",
 
     "permissions": {
@@ -99,14 +99,14 @@
       "licenses": [
         {
           "name": "Public Domain, CC0-1.0",
-          "URL": "https://code.usgs.gov/astrogeology/isis/-/raw/8.3.0/LICENSE.md"
+          "URL": "https://code.usgs.gov/astrogeology/isis/-/raw/9.0.0_rc1/LICENSE.md"
         }
       ]
     },
 
     "homepageURL": "https://isis.astrogeology.usgs.gov",
-    "downloadURL": "https://code.usgs.gov/astrogeology/isis/-/archive/8.3.0/8.3.0.zip",
-    "disclaimerURL": "https://code.usgs.gov/astrogeology/isis/-/raw/8.3.0/DISCLAIMER.md",
+    "downloadURL": "https://code.usgs.gov/astrogeology/isis/-/archive/9.0.0_rc1/isis-9.0.0_rc1.zip",
+    "disclaimerURL": "https://code.usgs.gov/astrogeology/isis/-/raw/9.0.0_rc1/DISCLAIMER.md",
     "repositoryURL": "https://code.usgs.gov/astrogeology/isis.git",
     "vcs": "git",
 
diff --git a/isis/CMakeLists.txt b/isis/CMakeLists.txt
index f8d1ad3eb3eb0c3f207c657a601ff79f41ea2261..8584042726be66daa8768e9d10e717504240f606 100644
--- a/isis/CMakeLists.txt
+++ b/isis/CMakeLists.txt
@@ -34,7 +34,7 @@ set(PACKAGE            "ISIS")
 set(PACKAGE_NAME       "USGS ISIS")
 
 # Version number
-set(VERSION            "8.3.0")
+set(VERSION            "9.0.0")
 string(REPLACE "." ";" VERSION_LIST ${VERSION})
 list(GET VERSION_LIST 0 VERSION_MAJOR)
 list(GET VERSION_LIST 1 VERSION_MINOR)