diff --git a/src/resolvelib/__init__.py b/src/resolvelib/__init__.py
index 4b28aaa..fd9f249 100644
--- a/src/resolvelib/__init__.py
+++ b/src/resolvelib/__init__.py
@@ -16,8 +16,8 @@
 
 from .providers import AbstractProvider
 from .reporters import BaseReporter
-from .resolvers.abstract import AbstractResolver
-from .resolvers.criterion import (
+from .resolvers import (
+    AbstractResolver,
     InconsistentCandidate,
     RequirementsConflicted,
     ResolutionError,
diff --git a/src/resolvelib/resolvers/__init__.py b/src/resolvelib/resolvers/__init__.py
index a2c5a42..621dd05 100644
--- a/src/resolvelib/resolvers/__init__.py
+++ b/src/resolvelib/resolvers/__init__.py
@@ -8,3 +8,18 @@
     ResolutionTooDeep,
     ResolverException,
 )
+
+__all__ = [
+    "AbstractProvider",
+    "AbstractResolver",
+    "BaseReporter",
+    "InconsistentCandidate",
+    "Resolver",
+    "RequirementsConflicted",
+    "ResolutionError",
+    "ResolutionImpossible",
+    "ResolutionTooDeep",
+    "RequirementInformation",
+    "ResolverException",
+    "Result",
+]