diff --git a/internal/execute/execute_test.go b/internal/execute/execute_test.go
index 6b0371601..9f84babe3 100644
--- a/internal/execute/execute_test.go
+++ b/internal/execute/execute_test.go
@@ -28,7 +28,8 @@ func TestNewExpression(t *testing.T) {
 
 func TestRun_Command(t *testing.T) {
 	t.Run("command is executed with bash", func(t *testing.T) {
-		cmd := New("echo $(type -a sh);", []string{})
+		// "type" (bash) output is locale sensitive
+		cmd := New("echo $(LANG=C type -a sh);", []string{})
 
 		var stdout strings.Builder
 		cmd.Stdout = &stdout
@@ -130,7 +131,8 @@ func TestRun_Command(t *testing.T) {
 
 func TestRun_Expression(t *testing.T) {
 	t.Run("expression is executed with bash", func(t *testing.T) {
-		cmd := NewExpression("echo $(type -a sh)", []string{})
+		// "type" (bash) output is locale sensitive
+		cmd := NewExpression("echo $(LANG=C type -a sh)", []string{})
 
 		var stdout strings.Builder
 		cmd.Stdout = &stdout
diff --git a/internal/git/git_test.go b/internal/git/git_test.go
index 8d5b77dfa..daa3601a9 100644
--- a/internal/git/git_test.go
+++ b/internal/git/git_test.go
@@ -12,6 +12,8 @@ import (
 )
 
 func TestRepoClone(t *testing.T) {
+	t.Setenv("LANG", "C") // error messages from git are locale dependent
+
 	t.Run("when repo name is valid but URL is invalid prints an error", func(t *testing.T) {
 		repo := NewRepo(t.TempDir())
 		err := repo.Clone("foobar", "")
@@ -94,6 +96,8 @@ func TestRepoRemoteURL(t *testing.T) {
 }
 
 func TestRepoUpdate(t *testing.T) {
+	t.Setenv("LANG", "C") // error messages from git are locale dependent
+
 	repoDir := generateRepo(t)
 	directory := t.TempDir()
 
diff --git a/internal/plugins/plugins_test.go b/internal/plugins/plugins_test.go
index e17035ceb..65a121f46 100644
--- a/internal/plugins/plugins_test.go
+++ b/internal/plugins/plugins_test.go
@@ -125,6 +125,8 @@ func TestAdd(t *testing.T) {
 	})
 
 	t.Run("when plugin name is valid but URL is invalid prints an error", func(t *testing.T) {
+		t.Setenv("LANG", "C") // git error messages are locale dependent
+
 		conf := config.Config{DataDir: testDataDir}
 
 		err := Add(conf, "foo", "foobar", "")