diff --git a/ci/test.sh b/ci/test.sh
index 9dd1fb8..27092bd 100755
--- a/ci/test.sh
+++ b/ci/test.sh
@@ -1,9 +1,6 @@
 #!/bin/bash
 # This script is used to ensure that the go.mod file is up to date.
 
-# Compatibility for Go 1.22
-export GODEBUG=gotypesalias=1
-
 set -euo pipefail
 
 for i in $(find $PWD -name go.mod); do
diff --git a/mockgen/import_mode_test.go b/mockgen/import_mode_test.go
index 99cd7ba..c5df56a 100644
--- a/mockgen/import_mode_test.go
+++ b/mockgen/import_mode_test.go
@@ -313,10 +313,7 @@ func Test_importModeParser_parsePackage(t *testing.T) {
 								Name: "AddHumans",
 								In: []*model.Parameter{
 									{
-										Type: &model.NamedType{
-											Package: "go.uber.org/mock/mockgen/internal/tests/import_mode",
-											Type:    "HumansCount",
-										},
+										Type: model.PredeclaredType("int"),
 									},
 								},
 								Out: []*model.Parameter{
@@ -325,7 +322,7 @@ func Test_importModeParser_parsePackage(t *testing.T) {
 											Len: -1, // slice
 											Type: &model.NamedType{
 												Package: "go.uber.org/mock/mockgen/internal/tests/import_mode",
-												Type:    "Human",
+												Type:    "Primate",
 											},
 										},
 									},
@@ -335,10 +332,7 @@ func Test_importModeParser_parsePackage(t *testing.T) {
 								Name: "HumanPopulation",
 								Out: []*model.Parameter{
 									{
-										Type: &model.NamedType{
-											Package: "go.uber.org/mock/mockgen/internal/tests/import_mode",
-											Type:    "HumansCount",
-										},
+										Type: model.PredeclaredType("int"),
 									},
 								},
 							},
diff --git a/mockgen/internal/tests/import_mode/mock/interfaces.go b/mockgen/internal/tests/import_mode/mock/interfaces.go
index d99ecbf..0279d21 100644
--- a/mockgen/internal/tests/import_mode/mock/interfaces.go
+++ b/mockgen/internal/tests/import_mode/mock/interfaces.go
@@ -1382,10 +1382,10 @@ func (m *MockEarth) EXPECT() *MockEarthMockRecorder {
 }
 
 // AddHumans mocks base method.
-func (m *MockEarth) AddHumans(arg0 import_mode.HumansCount) []import_mode.Human {
+func (m *MockEarth) AddHumans(arg0 int) []import_mode.Primate {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "AddHumans", arg0)
-	ret0, _ := ret[0].([]import_mode.Human)
+	ret0, _ := ret[0].([]import_mode.Primate)
 	return ret0
 }
 
@@ -1402,28 +1402,28 @@ type MockEarthAddHumansCall struct {
 }
 
 // Return rewrite *gomock.Call.Return
-func (c *MockEarthAddHumansCall) Return(arg0 []import_mode.Human) *MockEarthAddHumansCall {
+func (c *MockEarthAddHumansCall) Return(arg0 []import_mode.Primate) *MockEarthAddHumansCall {
 	c.Call = c.Call.Return(arg0)
 	return c
 }
 
 // Do rewrite *gomock.Call.Do
-func (c *MockEarthAddHumansCall) Do(f func(import_mode.HumansCount) []import_mode.Human) *MockEarthAddHumansCall {
+func (c *MockEarthAddHumansCall) Do(f func(int) []import_mode.Primate) *MockEarthAddHumansCall {
 	c.Call = c.Call.Do(f)
 	return c
 }
 
 // DoAndReturn rewrite *gomock.Call.DoAndReturn
-func (c *MockEarthAddHumansCall) DoAndReturn(f func(import_mode.HumansCount) []import_mode.Human) *MockEarthAddHumansCall {
+func (c *MockEarthAddHumansCall) DoAndReturn(f func(int) []import_mode.Primate) *MockEarthAddHumansCall {
 	c.Call = c.Call.DoAndReturn(f)
 	return c
 }
 
 // HumanPopulation mocks base method.
-func (m *MockEarth) HumanPopulation() import_mode.HumansCount {
+func (m *MockEarth) HumanPopulation() int {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "HumanPopulation")
-	ret0, _ := ret[0].(import_mode.HumansCount)
+	ret0, _ := ret[0].(int)
 	return ret0
 }
 
@@ -1440,19 +1440,19 @@ type MockEarthHumanPopulationCall struct {
 }
 
 // Return rewrite *gomock.Call.Return
-func (c *MockEarthHumanPopulationCall) Return(arg0 import_mode.HumansCount) *MockEarthHumanPopulationCall {
+func (c *MockEarthHumanPopulationCall) Return(arg0 int) *MockEarthHumanPopulationCall {
 	c.Call = c.Call.Return(arg0)
 	return c
 }
 
 // Do rewrite *gomock.Call.Do
-func (c *MockEarthHumanPopulationCall) Do(f func() import_mode.HumansCount) *MockEarthHumanPopulationCall {
+func (c *MockEarthHumanPopulationCall) Do(f func() int) *MockEarthHumanPopulationCall {
 	c.Call = c.Call.Do(f)
 	return c
 }
 
 // DoAndReturn rewrite *gomock.Call.DoAndReturn
-func (c *MockEarthHumanPopulationCall) DoAndReturn(f func() import_mode.HumansCount) *MockEarthHumanPopulationCall {
+func (c *MockEarthHumanPopulationCall) DoAndReturn(f func() int) *MockEarthHumanPopulationCall {
 	c.Call = c.Call.DoAndReturn(f)
 	return c
 }