diff --git a/tests/Composer/Test/DependencyResolver/Fixtures/poolbuilder/multi-repo-replace-partial-update.test b/tests/Composer/Test/DependencyResolver/Fixtures/poolbuilder/multi-repo-replace-partial-update.test
new file mode 100644
index 000000000..01eda5215
--- /dev/null
+++ b/tests/Composer/Test/DependencyResolver/Fixtures/poolbuilder/multi-repo-replace-partial-update.test
@@ -0,0 +1,107 @@
+--TEST--
+Check that replacers from additional repositories are loaded when doing a partial update
+
+--REQUEST--
+{
+    "require": {
+        "base/package": "^1.0",
+        "indirect/replacer": "^1.0"
+    },
+    "locked": [
+        {"name": "shared/dep", "version": "1.2.0", "id": 1},
+        {"name": "indirect/replacer", "version": "1.2.0", "require": {"replacer/package": "^1.2"}, "id": 2},
+        {"name": "replacer/package", "version": "1.2.0", "require": {"shared/dep": "^1.1"}, "replace": {"base/package": "1.2.0"}, "id": 3}
+    ],
+    "allowList": [
+        "indirect/replacer"
+    ],
+    "allowTransitiveDepsNoRootRequire": true
+}
+
+--FIXED--
+[
+]
+
+--PACKAGE-REPOS--
+[
+    [
+        {
+            "name": "base/package",
+            "version": "1.0.0",
+            "require": {
+                "shared/dep": "^1.2"
+            }
+        },
+        {
+            "name": "shared/dep",
+            "version": "1.0.0"
+        },
+        {
+            "name": "shared/dep",
+            "version": "1.2.0"
+        }
+    ],
+    [
+        {
+            "name": "base/package",
+            "version": "1.1.0"
+        },
+        {
+            "name": "shared/dep",
+            "version": "1.3.0"
+        }
+    ],
+    {
+        "canonical": false,
+        "packages": [
+            {
+                "name": "indirect/replacer",
+                "version": "1.2.0",
+                "require": {
+                    "replacer/package": "^1.2"
+                }
+            },
+            {
+                "name": "replacer/package",
+                "version": "1.2.0",
+                "require": {
+                    "shared/dep": "^1.1"
+                }
+            },
+            {
+                "name": "shared/dep",
+                "version": "1.1.0"
+            }
+        ]
+    },
+    [
+        {
+            "name": "replacer/package",
+            "version": "1.0.0",
+            "require": {
+                "shared/dep": "^1.0"
+            },
+            "replace": {
+                "base/package": "1.0.0"
+            }
+        },
+        {
+            "name": "indirect/replacer",
+            "version": "1.0.0",
+            "require": {
+                "replacer/package": "^1.0"
+            }
+        }
+    ]
+]
+
+--EXPECT--
+[
+    "indirect/replacer-1.2.0.0",
+    "indirect/replacer-1.0.0.0",
+    "replacer/package-1.2.0.0",
+    "replacer/package-1.0.0.0",
+    "base/package-1.0.0.0",
+    "shared/dep-1.0.0.0",
+    "shared/dep-1.2.0.0"
+]
diff --git a/tests/Composer/Test/DependencyResolver/Fixtures/poolbuilder/multi-repo-replace.test b/tests/Composer/Test/DependencyResolver/Fixtures/poolbuilder/multi-repo-replace.test
index 31850dcb6..00c63e4f5 100644
--- a/tests/Composer/Test/DependencyResolver/Fixtures/poolbuilder/multi-repo-replace.test
+++ b/tests/Composer/Test/DependencyResolver/Fixtures/poolbuilder/multi-repo-replace.test
@@ -71,6 +71,9 @@ Check that replacers from additional repositories are loaded
             "version": "1.0.0",
             "require": {
                 "shared/dep": "^1.0"
+            },
+            "replace": {
+                "base/package": "1.2.0"
             }
         },
         {