diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index ff0b3514..fac123de 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -9,6 +9,18 @@ updates:
     open-pull-requests-limit: 10
     labels:
       - "dependencies"
+    groups:
+      # Bundle all patch/minor updates of the same dependency type into one
+      # weekly PR. Prevents partial bumps of sibling packages that share
+      # peer dependencies (e.g. lexical + @lexical/*), which otherwise
+      # install two copies of the core package and break type-checking.
+      # Majors stay as individual PRs (and are ignored below anyway).
+      production-dependencies:
+        dependency-type: "production"
+        update-types: ["patch", "minor"]
+      development-dependencies:
+        dependency-type: "development"
+        update-types: ["patch", "minor"]
     ignore:
       # Ignore major version bumps — review those manually
       - dependency-name: "*"