diff --git a/packages/@react-spectrum/s2/package.json b/packages/@react-spectrum/s2/package.json
index 36fe4a9ad72..cb644b964bc 100644
--- a/packages/@react-spectrum/s2/package.json
+++ b/packages/@react-spectrum/s2/package.json
@@ -174,8 +174,8 @@
     "react-stately": "^3.42.0"
   },
   "peerDependencies": {
-    "react": "^18.0.0 || ^19.0.0-rc.1",
-    "react-dom": "^18.0.0 || ^19.0.0-rc.1"
+    "react": "^19.0.0-rc.1",
+    "react-dom": "^19.0.0-rc.1"
   },
   "publishConfig": {
     "access": "public"
diff --git a/packages/dev/s2-icon-builder/package.json b/packages/dev/s2-icon-builder/package.json
index 4caac5be877..b1713cfa00f 100644
--- a/packages/dev/s2-icon-builder/package.json
+++ b/packages/dev/s2-icon-builder/package.json
@@ -29,8 +29,8 @@
   },
   "peerDependencies": {
     "@react-spectrum/s2": ">=0.8.0",
-    "react": "^18.0.0 || ^19.0.0-rc.1",
-    "react-dom": "^18.0.0 || ^19.0.0-rc.1"
+    "react": "^19.0.0-rc.1",
+    "react-dom": "^19.0.0-rc.1"
   },
   "files": [
     "index.js",
diff --git a/scripts/verdaccio-build-icon-builder.sh b/scripts/verdaccio-build-icon-builder.sh
index efd59abcaa9..a7798c7f2ac 100755
--- a/scripts/verdaccio-build-icon-builder.sh
+++ b/scripts/verdaccio-build-icon-builder.sh
@@ -67,8 +67,8 @@ cat > icon-library-test/package.json << EOF
   },
   "peerDependencies": {
     "@react-spectrum/s2": ">=0.8.0",
-    "react": "^18.0.0 || ^19.0.0-rc.1",
-    "react-dom": "^18.0.0 || ^19.0.0-rc.1"
+    "react": "^19.0.0-rc.1",
+    "react-dom": "^19.0.0-rc.1"
   },
   "devDependencies": {
     "@react-spectrum/s2-icon-builder": "latest",
diff --git a/yarn.config.cjs b/yarn.config.cjs
index 87fc6cd0c17..69d520b3723 100644
--- a/yarn.config.cjs
+++ b/yarn.config.cjs
@@ -23,7 +23,9 @@ function enforceConsistentDependenciesAcrossTheProject({Yarn}) {
         }
         if (dependency.workspace.ident === 'storybook-builder-parcel') {
           dependency.update('*');
-        } else if (dependency.workspace.ident === '@react-spectrum/s2' || dependency.workspace.ident === '@react-spectrum/codemods' || dependency.workspace.ident === '@react-spectrum/s2-icon-builder') {
+        } else if (dependency.workspace.ident === '@react-spectrum/s2' || dependency.workspace.ident === '@react-spectrum/s2-icon-builder') {
+          dependency.update('^19.0.0-rc.1');
+        } else if (dependency.workspace.ident === '@react-spectrum/codemods') {
           dependency.update('^18.0.0 || ^19.0.0-rc.1');
         } else {
           dependency.update('^16.8.0 || ^17.0.0-rc.1 || ^18.0.0 || ^19.0.0-rc.1');
diff --git a/yarn.lock b/yarn.lock
index d980818b879..d2748c1e4b3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7525,8 +7525,8 @@ __metadata:
     glob: "npm:^11.0.3"
   peerDependencies:
     "@react-spectrum/s2": ">=0.8.0"
-    react: ^18.0.0 || ^19.0.0-rc.1
-    react-dom: ^18.0.0 || ^19.0.0-rc.1
+    react: ^19.0.0-rc.1
+    react-dom: ^19.0.0-rc.1
   bin:
     transform-icons: index.js
   languageName: unknown
@@ -7567,8 +7567,8 @@ __metadata:
     react-aria-components: "npm:^1.13.0"
     react-stately: "npm:^3.42.0"
   peerDependencies:
-    react: ^18.0.0 || ^19.0.0-rc.1
-    react-dom: ^18.0.0 || ^19.0.0-rc.1
+    react: ^19.0.0-rc.1
+    react-dom: ^19.0.0-rc.1
   languageName: unknown
   linkType: soft