diff --git a/internal/adapter/firecracker/egress_test.go b/internal/adapter/firecracker/egress_test.go
index 690cd200..ec9ad570 100644
--- a/internal/adapter/firecracker/egress_test.go
+++ b/internal/adapter/firecracker/egress_test.go
@@ -5,6 +5,7 @@ import (
 	"context"
 	"errors"
 	"log/slog"
+	"runtime"
 	"strings"
 	"testing"
 
@@ -110,6 +111,12 @@ func TestTranslate_SanitizesTableName(t *testing.T) {
 // touching the kernel. Linux integration tests live in
 // egress_linux_integration_test.go and are gated on root + GOOS=linux.
 func TestApplyEgressRules_FallbackBehavior(t *testing.T) {
+	if runtime.GOOS == "linux" {
+		// On Linux applyEgressRules hits the real nftables path, which needs
+		// CAP_NET_ADMIN. CI runners don't have it; Linux-specific coverage
+		// lives in egress_linux_test.go behind a root-only gate.
+		t.Skip("Linux path exercises real nftables; see egress_linux_test.go")
+	}
 	var buf bytes.Buffer
 	log := slog.New(slog.NewTextHandler(&buf, &slog.HandlerOptions{Level: slog.LevelDebug}))
 
diff --git a/internal/cli/login_github_test.go b/internal/cli/login_github_test.go
index 19249a8e..bf79742d 100644
--- a/internal/cli/login_github_test.go
+++ b/internal/cli/login_github_test.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"errors"
 	"net/http"
 	"net/http/httptest"
 	"path/filepath"
@@ -196,18 +197,17 @@ func TestPollForGitHubToken_Cancel(t *testing.T) {
 	})
 	defer gh.server.Close()
 	ctx, cancel := context.WithCancel(context.Background())
-	// Cancel almost immediately.
-	go func() {
-		time.Sleep(5 * time.Millisecond)
-		cancel()
-	}()
+	// Cancel up-front so the first poll observes ctx.Err() deterministically.
+	// The previous version raced a sleep-then-cancel goroutine against the
+	// poll loop and was flaky under loaded CI runners.
+	cancel()
 	_, err := pollForGitHubToken(ctx, gh.server.Client(),
 		gh.server.URL, "id", "DEV", 1*time.Millisecond)
 	if err == nil {
 		t.Fatalf("expected error on cancel, got nil")
 	}
-	if !strings.Contains(err.Error(), "cancelled") {
-		t.Fatalf("error should mention cancel; got %v", err)
+	if !errors.Is(err, context.Canceled) {
+		t.Fatalf("error should wrap context.Canceled; got %v", err)
 	}
 }