diff --git a/news/278.bugfix.rst b/news/278.bugfix.rst
new file mode 100644
index 0000000000000000000000000000000000000000..01f096913ce53826de3945cd9cf8997e3dadba35
--- /dev/null
+++ b/news/278.bugfix.rst
@@ -0,0 +1 @@
+Fix a bug that editable package doesn't override the non-editable version in the working set.
diff --git a/pdm/installers/installers.py b/pdm/installers/installers.py
index 27721504147a8f345164ff33fa810c4220bb8352..4d23fc64896f134361130cb7c65b99a17118f102 100644
--- a/pdm/installers/installers.py
+++ b/pdm/installers/installers.py
@@ -20,7 +20,7 @@ if TYPE_CHECKING:
 
 
 def is_dist_editable(dist: Distribution) -> bool:
-    return isinstance(dist, EggInfoDistribution)
+    return isinstance(dist, EggInfoDistribution) or getattr(dist, "editable", False)
 
 
 def format_dist(dist: Distribution) -> str:
diff --git a/pdm/installers/synchronizers.py b/pdm/installers/synchronizers.py
index febad897682177ef04864806ce63e8cad78b8871..1e1cf1920524b0c0bac71c8401f3905b570a9378 100644
--- a/pdm/installers/synchronizers.py
+++ b/pdm/installers/synchronizers.py
@@ -117,8 +117,11 @@ class Synchronizer:
                 can = candidates.pop(key)
                 if can.marker and not can.marker.evaluate(environment):
                     to_remove.append(key)
-                elif not is_dist_editable(dist) and dist.version != can.version:
-                    # XXX: An editable distribution is always considered as consistent.
+                elif not is_dist_editable(dist) and (
+                    dist.version != can.version or can.req.editable
+                ):
+                    to_update.append(key)
+                elif is_dist_editable(dist) and not can.req.editable:
                     to_update.append(key)
             elif key not in self.all_candidates and key not in self.SEQUENTIAL_PACKAGES:
                 # Remove package only if it is not required by any section
diff --git a/pdm/models/candidates.py b/pdm/models/candidates.py
index c127f7099b3ff1a102d7d743390a4f422bd0d04c..3ada354b791aa45021c1905a71a75d1821052eea 100644
--- a/pdm/models/candidates.py
+++ b/pdm/models/candidates.py
@@ -237,7 +237,12 @@ class Candidate:
         }
         project_root = self.environment.project.root.as_posix()
         if self.req.is_vcs:
-            result.update({self.req.vcs: self.req.repo, "revision": self.revision})
+            result.update(
+                {
+                    self.req.vcs: self.req.repo,
+                    "ref": self.req.ref if self.req.editable else self.revision,
+                }
+            )
         elif not self.req.is_named:
             if self.req.is_file_or_url and self.req.is_local_dir:
                 result.update(path=path_replace(project_root, ".", self.req.str_path))
diff --git a/tests/cli/test_actions.py b/tests/cli/test_actions.py
index eedb7650e761ca17b6b59bfc2aefaedb5798d16b..527a8935f7324816f63bc99f90dd1bef8625cec9 100644
--- a/tests/cli/test_actions.py
+++ b/tests/cli/test_actions.py
@@ -450,3 +450,15 @@ def test_update_ignore_constraints(project, repository, working_set):
 def test_init_validate_python_requires(project_no_init):
     with pytest.raises(ValueError):
         actions.do_init(project_no_init, python_requires="3.7")
+
+
+def test_editable_package_override_non_editable(project, repository, working_set, vcs):
+    project.environment.python_requires = PySpecSet(">=3.6")
+    actions.do_add(
+        project, packages=["git+https://github.com/test-root/demo.git#egg=demo"]
+    )
+    actions.do_add(
+        project,
+        editables=["git+https://github.com/test-root/demo.git#egg=demo"],
+    )
+    assert working_set["demo"].editable
diff --git a/tests/conftest.py b/tests/conftest.py
index eabefca1882d916e758de4f39dcb49bc8c1b6969..54497971ccd5e764f5b92e0653eecb809a6be8b3 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -146,9 +146,10 @@ class TestProject(Project):
 
 
 class Distribution:
-    def __init__(self, key, version):
+    def __init__(self, key, version, editable=False):
         self.key = key
         self.version = version
+        self.editable = editable
         self.dependencies = []
 
     def requires(self, extras=()):
@@ -190,7 +191,7 @@ def working_set(mocker, repository):
         pip_logging._log_state.indentation = 0
         dependencies = repository.get_dependencies(candidate)[0]
         key = safe_name(candidate.name).lower()
-        dist = Distribution(key, candidate.version)
+        dist = Distribution(key, candidate.version, candidate.req.editable)
         dist.dependencies = dependencies
         rv.add_distribution(dist)