diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2f0a64e..132e24b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v3
         with:
-          go-version: "1.20.5"
+          go-version: "1.21"
 
       - name: Install govulncheck
         run: go install golang.org/x/vuln/cmd/govulncheck@latest
@@ -39,7 +39,7 @@ jobs:
             [windows-latest, windows],
           ]
         arch: [amd64]
-        go-version: ["1.20.5"]
+        go-version: ["1.21"]
     runs-on: ${{ matrix.os[0] }}
     name: Test (go${{ matrix.go-version }}, ${{ matrix.os[1] }}, ${{ matrix.arch }})
     defaults:
diff --git a/bizip.go b/bizip.go
index 1c6d5d0..65a8dce 100644
--- a/bizip.go
+++ b/bizip.go
@@ -218,6 +218,7 @@ func (bz *Bizip) createUnzipReader(file *os.File) (io.ReadCloser, error) {
 	}
 
 	zipFile := zipReader.File[0]
+	zipFile.DeferAuth = true
 
 	if bz.Password != "" {
 		zipFile.SetPassword(bz.Password)