diff --git a/scripts/fiber/tests-failing.txt b/scripts/fiber/tests-failing.txt
index 06137eac04917..95c133ab0c7e5 100644
--- a/scripts/fiber/tests-failing.txt
+++ b/scripts/fiber/tests-failing.txt
@@ -18,8 +18,6 @@ src/renderers/dom/shared/__tests__/ReactDOMTextComponent-test.js
 * can reconcile text arbitrarily split into multiple nodes on some substitutions only
 
 src/renderers/dom/shared/__tests__/ReactMount-test.js
-* throws when given a string
-* throws when given a factory
 * tracks root instances
 * marks top-level mounts
 
@@ -42,6 +40,17 @@ src/renderers/shared/__tests__/ReactPerf-test.js
 * should work when measurement starts during reconciliation
 
 src/renderers/shared/hooks/__tests__/ReactComponentTreeHook-test.js
+* ignores null children
+* ignores false children
+* updates from a host child to null
+* updates from a host child to a composite child
+* updates from null to a composite child
+* updates from a composite child to null
+* updates from a host child to null
+* updates from a host child to a composite child
+* updates from null to a composite child
+* updates from a composite child to null
+* purges unmounted components automatically
 * can be retrieved by ID
 
 src/renderers/shared/hooks/__tests__/ReactHostOperationHistoryHook-test.js
diff --git a/scripts/fiber/tests-passing-except-dev.txt b/scripts/fiber/tests-passing-except-dev.txt
index decc542712916..adaca4a922553 100644
--- a/scripts/fiber/tests-passing-except-dev.txt
+++ b/scripts/fiber/tests-passing-except-dev.txt
@@ -7,10 +7,7 @@ src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
 
 src/renderers/dom/shared/__tests__/ReactMount-test.js
 * should warn if mounting into dirty rendered markup
-* should warn when mounting into document.body
 * should account for escaping on a checksum mismatch
-* should warn if render removes React-rendered children
-* should warn if the unmounted node was rendered by another copy of React
 
 src/renderers/dom/shared/__tests__/ReactMountDestruction-test.js
 * should warn when unmounting a non-container root node
@@ -27,8 +24,6 @@ src/renderers/shared/hooks/__tests__/ReactComponentTreeHook-test.js
 * reports a host tree correctly
 * reports a simple tree with composites correctly
 * reports a tree with composites correctly
-* ignores null children
-* ignores false children
 * reports text nodes as children
 * reports a single text node as a child
 * reports a single number node as a child
@@ -58,20 +53,11 @@ src/renderers/shared/hooks/__tests__/ReactComponentTreeHook-test.js
 * updates mixed children
 * updates with a host child
 * updates from null to a host child
-* updates from a host child to null
-* updates from a host child to a composite child
 * updates from a composite child to a host child
-* updates from null to a composite child
-* updates from a composite child to null
 * updates with a host child
 * updates from null to a host child
-* updates from a host child to null
-* updates from a host child to a composite child
 * updates from a composite child to a host child
-* updates from null to a composite child
-* updates from a composite child to null
 * tracks owner correctly
-* purges unmounted components automatically
 * reports update counts
 * does not report top-level wrapper as a root
 * registers inlined text nodes
diff --git a/scripts/fiber/tests-passing.txt b/scripts/fiber/tests-passing.txt
index 3b85124db5684..0393d3c71e9cd 100644
--- a/scripts/fiber/tests-passing.txt
+++ b/scripts/fiber/tests-passing.txt
@@ -769,10 +769,15 @@ src/renderers/dom/shared/__tests__/ReactEventListener-test.js
 
 src/renderers/dom/shared/__tests__/ReactMount-test.js
 * throws when given a non-node
+* throws when given a string
+* throws when given a factory
 * should render different components in same root
 * should unmount and remount if the key changes
 * should reuse markup if rendering to the same target twice
 * should not warn if mounting into non-empty node
+* should warn when mounting into document.body
+* should warn if render removes React-rendered children
+* should warn if the unmounted node was rendered by another copy of React
 * passes the correct callback context
 
 src/renderers/dom/shared/__tests__/ReactMountDestruction-test.js