diff --git a/python/ide-common/src/customization/PyToolWindowLayoutProvider.kt b/python/ide-common/src/customization/PyToolWindowLayoutProvider.kt
index a238a1f50d94..5929cdc212e8 100644
--- a/python/ide-common/src/customization/PyToolWindowLayoutProvider.kt
+++ b/python/ide-common/src/customization/PyToolWindowLayoutProvider.kt
@@ -11,7 +11,7 @@ class PyToolWindowLayoutProvider : DefaultToolWindowLayoutExtension {
 
   override fun buildV2Layout(builder: DefaultToolWindowLayoutBuilder) {
     builder.right.addOrUpdate("Plots") { weight = 0.1f }
-    builder.bottom.addOrUpdate("Python Packages") { weight = 0.1f }
+    builder.right.addOrUpdate("Python Packages") { weight = 0.25f }
     builder.bottom.addOrUpdate("Python Console") { weight = 0.1f }
     thisLogger().info("Python default layout applied")
   }
diff --git a/python/pluginResources/intellij.python.community.impl.xml b/python/pluginResources/intellij.python.community.impl.xml
index 5837c223191d..4976148aece5 100644
--- a/python/pluginResources/intellij.python.community.impl.xml
+++ b/python/pluginResources/intellij.python.community.impl.xml
@@ -766,9 +766,10 @@
     <notificationGroup id="Python source root detection" displayType="STICKY_BALLOON" isLogByDefault="true" bundle="messages.PyBundle"
                        key="python.source.root.detection.confirm.notification.group"/>
 
-    <toolWindow id="Python Packages" anchor="bottom" secondary="true"
+    <toolWindow id="Python Packages" anchor="right" secondary="false"
                 icon="com.jetbrains.python.icons.PythonIcons.Python.PythonPackages"
                 factoryClass="com.jetbrains.python.packaging.toolwindow.PyPackagesToolWindowFactory"/>
+    <postStartupActivity implementation="com.jetbrains.python.packaging.toolwindow.PyPackagesToolWindowMigrationActivity"/>
     <toolWindowExtractorMode id="Python Packages" mode="mirror"/>
     <toolWindowExtractor implementation="com.jetbrains.python.packaging.toolwindow.PyPackagesToolWindowExtractor"/>
     <statistics.counterUsagesCollector
diff --git a/python/src/com/jetbrains/python/packaging/toolwindow/PyPackagesToolWindowMigrationActivity.kt b/python/src/com/jetbrains/python/packaging/toolwindow/PyPackagesToolWindowMigrationActivity.kt
new file mode 100644
index 000000000000..a49adcfb56e8
--- /dev/null
+++ b/python/src/com/jetbrains/python/packaging/toolwindow/PyPackagesToolWindowMigrationActivity.kt
@@ -0,0 +1,54 @@
+// Copyright 2000-2026 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.jetbrains.python.packaging.toolwindow
+
+import com.intellij.ide.util.PropertiesComponent
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.startup.ProjectActivity
+import com.intellij.openapi.wm.ToolWindowAnchor
+import com.intellij.openapi.wm.ToolWindowManager
+import com.intellij.toolWindow.ToolWindowDefaultLayoutManager
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+/**
+ * PY-89840: put the "Python Packages" tool window on the right stripe by default.
+ *
+ * Migrates the application-wide default layout once; new projects (and projects without a saved layout for
+ * this id) pick up the new anchor from that default. Projects that already persisted a custom placement
+ * keep it.
+ */
+internal class PyPackagesToolWindowMigrationActivity : ProjectActivity {
+  override suspend fun execute(project: Project) {
+    val appProperties = PropertiesComponent.getInstance()
+    if (!appProperties.getBoolean(APP_MIGRATION_FLAG_KEY)) {
+      val manager = ToolWindowDefaultLayoutManager.getInstance()
+      val layout = manager.getLayoutCopy()
+      val info = layout.getInfo(PyPackagingToolWindowPanel.PY_PACKAGES_TOOL_WINDOW_ID)
+      if (info != null && (info.anchor != ToolWindowAnchor.RIGHT || info.isSplit)) {
+        info.anchor = ToolWindowAnchor.RIGHT
+        info.isSplit = false
+        manager.setLayout(layout)
+      }
+      appProperties.setValue(APP_MIGRATION_FLAG_KEY, true)
+    }
+
+    val projectProperties = PropertiesComponent.getInstance(project)
+    if (projectProperties.getBoolean(PROJECT_MIGRATION_FLAG_KEY)) return
+
+    withContext(Dispatchers.Main) {
+      if (project.isDisposed) return@withContext
+      val toolWindow = ToolWindowManager.getInstance(project).getToolWindow(PyPackagingToolWindowPanel.PY_PACKAGES_TOOL_WINDOW_ID)
+                       ?: return@withContext
+      if (toolWindow.anchor != ToolWindowAnchor.RIGHT || toolWindow.isSplitMode) {
+        toolWindow.setAnchor(ToolWindowAnchor.RIGHT, null)
+        toolWindow.setSplitMode(false, null)
+      }
+    }
+    projectProperties.setValue(PROJECT_MIGRATION_FLAG_KEY, true)
+  }
+
+  companion object {
+    private const val APP_MIGRATION_FLAG_KEY: String = "python.packages.toolwindow.migrated.to.right.top.v2"
+    private const val PROJECT_MIGRATION_FLAG_KEY: String = "python.packages.toolwindow.project.migrated.to.right.top.v2"
+  }
+}