diff --git a/CHANGELOG.md b/CHANGELOG.md
index b333ed4770f..156d506372d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,4 @@
+- Updated supported runtimes for functions. Default python runtime is now 3.13. (#8534)
 - Fixed issue where Secret Manager API was not automatically enabled for functions using secrets. (#8528)
 - Changed artifact registry cleanup policy error to warn for CI/CD workloads #8513
 - Enhance firebase init apphosting to support local source deploys. (#8479)
diff --git a/schema/firebase-config.json b/schema/firebase-config.json
index bdab2cf8be1..b0e531545b5 100644
--- a/schema/firebase-config.json
+++ b/schema/firebase-config.json
@@ -275,16 +275,12 @@
                 },
                 "runtime": {
                     "enum": [
-                        "nodejs10",
-                        "nodejs12",
-                        "nodejs14",
-                        "nodejs16",
-                        "nodejs18",
                         "nodejs20",
                         "nodejs22",
                         "python310",
                         "python311",
-                        "python312"
+                        "python312",
+                        "python313"
                     ],
                     "type": "string"
                 },
diff --git a/src/deploy/functions/runtimes/python/index.ts b/src/deploy/functions/runtimes/python/index.ts
index 1bcf0796103..70d18976990 100644
--- a/src/deploy/functions/runtimes/python/index.ts
+++ b/src/deploy/functions/runtimes/python/index.ts
@@ -60,6 +60,8 @@ export function getPythonBinary(
     return "python3.11";
   } else if (runtime === "python312") {
     return "python3.12";
+  } else if (runtime === "python313") {
+    return "python3.13";
   }
   assertExhaustive(runtime, `Unhandled python runtime ${runtime as string}`);
 }
diff --git a/src/deploy/functions/runtimes/supported/supported.spec.ts b/src/deploy/functions/runtimes/supported/supported.spec.ts
index f5a7d2a0940..a099b406fe9 100644
--- a/src/deploy/functions/runtimes/supported/supported.spec.ts
+++ b/src/deploy/functions/runtimes/supported/supported.spec.ts
@@ -46,7 +46,7 @@ describe("supported runtimes", () => {
       expect(logLabeledWarning).to.have.been.calledWith(
         "functions",
         "Runtime Node.js 20 was deprecated on 2026-04-30 and will be " +
-          "decommissioned on 2026-10-31, after which you will not be able to " +
+          "decommissioned on 2026-10-30, after which you will not be able to " +
           "deploy without upgrading. Consider upgrading now to avoid disruption. See " +
           "https://cloud.google.com/functions/docs/runtime-support for full " +
           "details on the lifecycle policy",
@@ -58,7 +58,7 @@ describe("supported runtimes", () => {
       expect(logLabeledWarning).to.have.been.calledWith(
         "functions",
         "Runtime Node.js 20 will be deprecated on 2026-04-30 and will be " +
-          "decommissioned on 2026-10-31, after which you will not be able to " +
+          "decommissioned on 2026-10-30, after which you will not be able to " +
           "deploy without upgrading. Consider upgrading now to avoid disruption. See " +
           "https://cloud.google.com/functions/docs/runtime-support for full " +
           "details on the lifecycle policy",
diff --git a/src/deploy/functions/runtimes/supported/types.ts b/src/deploy/functions/runtimes/supported/types.ts
index e7cd7014734..7c127e4569a 100644
--- a/src/deploy/functions/runtimes/supported/types.ts
+++ b/src/deploy/functions/runtimes/supported/types.ts
@@ -49,63 +49,69 @@ export const RUNTIMES = runtimes({
   },
   nodejs10: {
     friendly: "Node.js 10",
-    status: "GA",
+    status: "decommissioned",
     deprecationDate: "2024-01-30",
     decommissionDate: "2025-01-30",
   },
   nodejs12: {
     friendly: "Node.js 12",
-    status: "GA",
+    status: "decommissioned",
     deprecationDate: "2024-01-30",
     decommissionDate: "2025-01-30",
   },
   nodejs14: {
     friendly: "Node.js 14",
-    status: "GA",
+    status: "decommissioned",
     deprecationDate: "2024-01-30",
     decommissionDate: "2025-01-30",
   },
   nodejs16: {
     friendly: "Node.js 16",
-    status: "GA",
+    status: "decommissioned",
     deprecationDate: "2024-01-30",
     decommissionDate: "2025-01-30",
   },
   nodejs18: {
     friendly: "Node.js 18",
-    status: "GA",
+    status: "decommissioned",
     deprecationDate: "2025-04-30",
-    decommissionDate: "2025-10-31",
+    decommissionDate: "2025-10-30",
   },
   nodejs20: {
     friendly: "Node.js 20",
     status: "GA",
     deprecationDate: "2026-04-30",
-    decommissionDate: "2026-10-31",
+    decommissionDate: "2026-10-30",
   },
   nodejs22: {
     friendly: "Node.js 22",
     status: "GA",
     deprecationDate: "2027-04-30",
-    decommissionDate: "2027-10-31",
+    decommissionDate: "2028-10-31",
   },
   python310: {
     friendly: "Python 3.10",
     status: "GA",
     deprecationDate: "2026-10-04",
-    decommissionDate: "2027-04-30",
+    decommissionDate: "2027-04-04",
   },
   python311: {
     friendly: "Python 3.11",
     status: "GA",
     deprecationDate: "2027-10-24",
-    decommissionDate: "2028-04-30",
+    decommissionDate: "2028-04-24",
   },
   python312: {
     friendly: "Python 3.12",
     status: "GA",
     deprecationDate: "2028-10-02",
-    decommissionDate: "2029-04-30",
+    decommissionDate: "2029-04-02",
+  },
+  python313: {
+    friendly: "Python 3.13",
+    status: "GA",
+    deprecationDate: "2029-10-10",
+    decommissionDate: "2030-04-10",
   },
 });
 
diff --git a/src/functions/projectConfig.spec.ts b/src/functions/projectConfig.spec.ts
index 4c6e568cfb4..de9e8d97b84 100644
--- a/src/functions/projectConfig.spec.ts
+++ b/src/functions/projectConfig.spec.ts
@@ -29,7 +29,7 @@ describe("projectConfig", () => {
     });
 
     it("fails validation given config w/o source", () => {
-      expect(() => projectConfig.validate([{ runtime: "nodejs10" }])).to.throw(
+      expect(() => projectConfig.validate([{ runtime: "nodejs22" }])).to.throw(
         FirebaseError,
         /codebase source must be specified/,
       );
@@ -84,7 +84,7 @@ describe("projectConfig", () => {
     });
 
     it("fails validation given singleton config w/o source", () => {
-      expect(() => projectConfig.normalizeAndValidate({ runtime: "nodejs10" })).to.throw(
+      expect(() => projectConfig.normalizeAndValidate({ runtime: "nodejs22" })).to.throw(
         FirebaseError,
         /codebase source must be specified/,
       );
@@ -98,7 +98,7 @@ describe("projectConfig", () => {
     });
 
     it("fails validation given multi-resource config w/o source", () => {
-      expect(() => projectConfig.normalizeAndValidate([{ runtime: "nodejs10" }])).to.throw(
+      expect(() => projectConfig.normalizeAndValidate([{ runtime: "nodejs22" }])).to.throw(
         FirebaseError,
         /codebase source must be specified/,
       );