diff --git a/packages/react-core/package.json b/packages/react-core/package.json
index 753ce88a5fa..349009ddf44 100644
--- a/packages/react-core/package.json
+++ b/packages/react-core/package.json
@@ -54,7 +54,7 @@
     "tslib": "^2.8.1"
   },
   "devDependencies": {
-    "@patternfly/patternfly": "^6.6.0",
+    "@patternfly/patternfly": "6.6.0-prerelease.18",
     "case-anything": "^3.1.2",
     "css": "^3.0.0",
     "fs-extra": "^11.3.3"
diff --git a/packages/react-core/src/components/TreeView/TreeViewListItem.tsx b/packages/react-core/src/components/TreeView/TreeViewListItem.tsx
index b2125e2763e..4ce5a4efeef 100644
--- a/packages/react-core/src/components/TreeView/TreeViewListItem.tsx
+++ b/packages/react-core/src/components/TreeView/TreeViewListItem.tsx
@@ -1,7 +1,7 @@
 import { memo, useState, useEffect, Children, isValidElement, cloneElement } from 'react';
 import { css } from '@patternfly/react-styles';
 import styles from '@patternfly/react-styles/css/components/TreeView/tree-view';
-import RhMicronsCaretDownIcon from '@patternfly/react-icons/dist/esm/icons/rh-microns-caret-down-icon';
+import RhMicronsCaretRightIcon from '@patternfly/react-icons/dist/esm/icons/rh-microns-caret-right-icon';
 import { TreeViewDataItem } from './TreeView';
 import { Badge } from '../Badge';
 import { useSSRSafeId } from '../../helpers';
@@ -155,7 +155,7 @@ const TreeViewListItemBase: React.FunctionComponent<TreeViewListItemProps> = ({
       tabIndex={-1}
     >
       <span className={css(styles.treeViewNodeToggleIcon)}>
-        <RhMicronsCaretDownIcon />
+        <RhMicronsCaretRightIcon />
       </span>
     </ToggleComponent>
   );
diff --git a/packages/react-core/src/components/TreeView/__tests__/__snapshots__/TreeViewListItem.test.tsx.snap b/packages/react-core/src/components/TreeView/__tests__/__snapshots__/TreeViewListItem.test.tsx.snap
index 018e0f12858..9844b00c562 100644
--- a/packages/react-core/src/components/TreeView/__tests__/__snapshots__/TreeViewListItem.test.tsx.snap
+++ b/packages/react-core/src/components/TreeView/__tests__/__snapshots__/TreeViewListItem.test.tsx.snap
@@ -36,7 +36,7 @@ exports[`Matches snapshot with children 1`] = `
                 width="1em"
               >
                 <path
-                  d="M18.71 5.29a.996.996 0 0 0-1.41 0l-7.29 7.29-7.3-7.29a.987.987 0 0 0-1.41-.02.987.987 0 0 0-.02 1.41l.02.02 7.65 7.65c.29.29.68.44 1.06.44s.77-.15 1.06-.44l7.65-7.65a.996.996 0 0 0 0-1.41Z"
+                  d="M14.35 8.94 6.71 1.29l-.02-.02c-.4-.38-1.03-.37-1.41.02-.38.4-.37 1.03.02 1.41l7.29 7.29-7.29 7.29a1.003 1.003 0 0 0 1.42 1.42l7.65-7.65c.59-.59.59-1.54 0-2.12Z"
                 />
               </svg>
             </span>
diff --git a/packages/react-docs/package.json b/packages/react-docs/package.json
index efbe585f78d..4600f9950be 100644
--- a/packages/react-docs/package.json
+++ b/packages/react-docs/package.json
@@ -23,7 +23,7 @@
     "test:a11y": "patternfly-a11y --config patternfly-a11y.config"
   },
   "dependencies": {
-    "@patternfly/patternfly": "^6.6.0",
+    "@patternfly/patternfly": "6.6.0-prerelease.18",
     "@patternfly/react-charts": "workspace:^",
     "@patternfly/react-code-editor": "workspace:^",
     "@patternfly/react-core": "workspace:^",
diff --git a/packages/react-icons/package.json b/packages/react-icons/package.json
index 5f6a32221db..4948aa3afda 100644
--- a/packages/react-icons/package.json
+++ b/packages/react-icons/package.json
@@ -38,7 +38,7 @@
     "@fortawesome/free-brands-svg-icons": "^5.15.4",
     "@fortawesome/free-regular-svg-icons": "^5.15.4",
     "@fortawesome/free-solid-svg-icons": "^5.15.4",
-    "@patternfly/patternfly": "^6.6.0",
+    "@patternfly/patternfly": "6.6.0-prerelease.18",
     "@rhds/icons": "^2.2.0",
     "fs-extra": "^11.3.3"
   },
diff --git a/packages/react-styles/package.json b/packages/react-styles/package.json
index aede2e96101..1c0e93d68bd 100644
--- a/packages/react-styles/package.json
+++ b/packages/react-styles/package.json
@@ -19,7 +19,7 @@
     "clean": "rimraf dist css"
   },
   "devDependencies": {
-    "@patternfly/patternfly": "^6.6.0",
+    "@patternfly/patternfly": "6.6.0-prerelease.18",
     "change-case": "^5.4.4",
     "fs-extra": "^11.3.3"
   },
diff --git a/packages/react-tokens/package.json b/packages/react-tokens/package.json
index 0526d6ce91b..4a79895ff93 100644
--- a/packages/react-tokens/package.json
+++ b/packages/react-tokens/package.json
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@adobe/css-tools": "^4.4.4",
-    "@patternfly/patternfly": "^6.6.0",
+    "@patternfly/patternfly": "6.6.0-prerelease.18",
     "fs-extra": "^11.3.3"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 88a84b0b3ce..981f0a472ec 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5070,10 +5070,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@patternfly/patternfly@npm:^6.6.0":
-  version: 6.6.0
-  resolution: "@patternfly/patternfly@npm:6.6.0"
-  checksum: 10c0/c7246baf490174e2fa04a3645452e1481a6fe37ab9bde1c7e9bad8326c398473d2fa707f015ca3b4226bf943b1e2855c15943bd95d1c3110d61ba44bbea368ee
+"@patternfly/patternfly@npm:6.6.0-prerelease.18":
+  version: 6.6.0-prerelease.18
+  resolution: "@patternfly/patternfly@npm:6.6.0-prerelease.18"
+  checksum: 10c0/1d1dede9a7057c8f977d787cfebb55f8920164cb25a1000853a3b1d99aaa49d0d4176fd5a150d8b2c17a72e66414fdc7445ebea67eba4118c04943bac179dbfe
   languageName: node
   linkType: hard
 
@@ -5171,7 +5171,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@patternfly/react-core@workspace:packages/react-core"
   dependencies:
-    "@patternfly/patternfly": "npm:^6.6.0"
+    "@patternfly/patternfly": "npm:6.6.0-prerelease.18"
     "@patternfly/react-icons": "workspace:^"
     "@patternfly/react-styles": "workspace:^"
     "@patternfly/react-tokens": "workspace:^"
@@ -5192,7 +5192,7 @@ __metadata:
   resolution: "@patternfly/react-docs@workspace:packages/react-docs"
   dependencies:
     "@patternfly/documentation-framework": "npm:^6.36.8"
-    "@patternfly/patternfly": "npm:^6.6.0"
+    "@patternfly/patternfly": "npm:6.6.0-prerelease.18"
     "@patternfly/patternfly-a11y": "npm:5.1.0"
     "@patternfly/react-charts": "workspace:^"
     "@patternfly/react-code-editor": "workspace:^"
@@ -5232,7 +5232,7 @@ __metadata:
     "@fortawesome/free-brands-svg-icons": "npm:^5.15.4"
     "@fortawesome/free-regular-svg-icons": "npm:^5.15.4"
     "@fortawesome/free-solid-svg-icons": "npm:^5.15.4"
-    "@patternfly/patternfly": "npm:^6.6.0"
+    "@patternfly/patternfly": "npm:6.6.0-prerelease.18"
     "@rhds/icons": "npm:^2.2.0"
     fs-extra: "npm:^11.3.3"
     tslib: "npm:^2.8.1"
@@ -5319,7 +5319,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@patternfly/react-styles@workspace:packages/react-styles"
   dependencies:
-    "@patternfly/patternfly": "npm:^6.6.0"
+    "@patternfly/patternfly": "npm:6.6.0-prerelease.18"
     change-case: "npm:^5.4.4"
     fs-extra: "npm:^11.3.3"
   languageName: unknown
@@ -5361,7 +5361,7 @@ __metadata:
   resolution: "@patternfly/react-tokens@workspace:packages/react-tokens"
   dependencies:
     "@adobe/css-tools": "npm:^4.4.4"
-    "@patternfly/patternfly": "npm:^6.6.0"
+    "@patternfly/patternfly": "npm:6.6.0-prerelease.18"
     fs-extra: "npm:^11.3.3"
   languageName: unknown
   linkType: soft