diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3b19f2807..6120c081e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ Requires JupyterLab `>=3.6.0,<4.0.0a0` and Python 3.8 or newer.
   - fix `undefined` being inserted for path-like completion items with no `insertText` ([#833])
   - reduce signature flickering when typing and hover flicker when moving mouse ([#836])
   - fix sporadic misplacement of hover tooltips ([#860], thanks @yamaton)
+  - fix hover tooltip not updated after character deletions ([#867], thanks @yamaton)
   - handle potential race condition in feature settings loading ([#882])
 - refactoring:
   - changed NPM packages namespace from `@krassowski` to `@jupyter-lsp` ([#862])
@@ -63,6 +64,7 @@ Requires JupyterLab `>=3.6.0,<4.0.0a0` and Python 3.8 or newer.
 [#852]: https://github.com/jupyter-lsp/jupyterlab-lsp/pull/852
 [#860]: https://github.com/jupyter-lsp/jupyterlab-lsp/pull/860
 [#864]: https://github.com/jupyter-lsp/jupyterlab-lsp/pull/864
+[#867]: https://github.com/jupyter-lsp/jupyterlab-lsp/pull/867
 [#882]: https://github.com/jupyter-lsp/jupyterlab-lsp/pull/882
 [#893]: https://github.com/jupyter-lsp/jupyterlab-lsp/pull/893
 
diff --git a/atest/05_Features/Hover.robot b/atest/05_Features/Hover.robot
index 420c258b6..ad2f7e781 100644
--- a/atest/05_Features/Hover.robot
+++ b/atest/05_Features/Hover.robot
@@ -66,6 +66,19 @@ Hover works in foreign code (javascript)
     Trigger Tooltip    Math
     Element Should Contain    ${HOVER_BOX}    Math: Math
 
+Update hover after character deletion
+    Enter Cell Editor    4
+    Trigger Tooltip    atan2
+    Element Text Should Be    ${HOVER_SIGNAL}    atan2
+    Capture Page Screenshot    01-hover-before-delection.png
+    Element Should Contain    ${HOVER_BOX}    atan2(y: SupportsFloat, x: SupportsFloat, /)
+    Place Cursor In Cell Editor At    4    line=2    character=13
+    Press Keys    None    DELETE
+    Trigger Tooltip    atan
+    Element Text Should Be    ${HOVER_SIGNAL}    atan
+    Capture Page Screenshot    02-hover-after-delection.png
+    Element Should Contain    ${HOVER_BOX}    atan(x: SupportsFloat, /)
+
 
 *** Keywords ***
 Last Occurrence
diff --git a/atest/05_Features/Jump.robot b/atest/05_Features/Jump.robot
index 0b2746d06..13cfc277f 100644
--- a/atest/05_Features/Jump.robot
+++ b/atest/05_Features/Jump.robot
@@ -89,7 +89,7 @@ Clean Up Folder With Spaces
     FOR    ${file}    IN    @{files}
         Remove File    ${NOTEBOOK DIR}${/}${FOLDER WITH SPACE}${/}${file}
     END
-    Remove Directory     ${NOTEBOOK DIR}${/}${FOLDER WITH SPACE}    recursive=True
+    Remove Directory    ${NOTEBOOK DIR}${/}${FOLDER WITH SPACE}    recursive=True
 
 Select Token Occurrence
     [Arguments]    ${token}    ${type}=variable    ${which}=last
diff --git a/atest/examples/Hover.ipynb b/atest/examples/Hover.ipynb
index c6dc73b89..e68905259 100644
--- a/atest/examples/Hover.ipynb
+++ b/atest/examples/Hover.ipynb
@@ -37,6 +37,16 @@
     "%%javascript\n",
     "Math"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import math\n",
+    "z = math.atan2(0.4, 0.3)\n"
+   ]
   }
  ],
  "metadata": {
diff --git a/packages/jupyterlab-lsp/src/editor_integration/editor_adapter.ts b/packages/jupyterlab-lsp/src/editor_integration/editor_adapter.ts
index 8aa299856..f4dab15aa 100644
--- a/packages/jupyterlab-lsp/src/editor_integration/editor_adapter.ts
+++ b/packages/jupyterlab-lsp/src/editor_integration/editor_adapter.ts
@@ -68,8 +68,13 @@ export class EditorAdapter<T extends IVirtualEditor<IEditor>> {
         return true;
       }
 
-      if (!change || !change.text.length || !change.text[0].length) {
-        // deletion - ignore
+      if (
+        !change ||
+        ((!change.text.length || !change.text[0].length) &&
+          (!change.removed ||
+            !change.removed.length ||
+            !change.removed[0].length))
+      ) {
         return true;
       }