diff --git a/go.mod b/go.mod
index 8aa5b09e..f2abb6be 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	contrib.go.opencensus.io/exporter/prometheus v0.1.0
 	github.com/Azure/azure-sdk-for-go v57.2.0+incompatible
 	github.com/Azure/go-autorest/autorest v0.11.28
-	github.com/Azure/go-autorest/autorest/adal v0.9.18
+	github.com/Azure/go-autorest/autorest/adal v0.9.21
 	github.com/coreos/go-iptables v0.3.0
 	github.com/fsnotify/fsnotify v1.4.9
 	github.com/google/go-cmp v0.5.5
diff --git a/go.sum b/go.sum
index a73adf13..b2148bc0 100644
--- a/go.sum
+++ b/go.sum
@@ -51,8 +51,9 @@ github.com/Azure/go-autorest/autorest v0.11.28 h1:ndAExarwr5Y+GaHE6VCaY1kyS/HwwG
 github.com/Azure/go-autorest/autorest v0.11.28/go.mod h1:MrkzG3Y3AH668QyF9KRk5neJnGgmhQ6krbhR8Q5eMvA=
 github.com/Azure/go-autorest/autorest/adal v0.9.5/go.mod h1:B7KF7jKIeC9Mct5spmyCB/A8CG/sEz1vwIRGv/bbw7A=
 github.com/Azure/go-autorest/autorest/adal v0.9.13/go.mod h1:W/MM4U6nLxnIskrw4UwWzlHfGjwUS50aOsc/I3yuU8M=
-github.com/Azure/go-autorest/autorest/adal v0.9.18 h1:kLnPsRjzZZUF3K5REu/Kc+qMQrvuza2bwSnNdhmzLfQ=
 github.com/Azure/go-autorest/autorest/adal v0.9.18/go.mod h1:XVVeme+LZwABT8K5Lc3hA4nAe8LDBVle26gTrguhhPQ=
+github.com/Azure/go-autorest/autorest/adal v0.9.21 h1:jjQnVFXPfekaqb8vIsv2G1lxshoW+oGv4MDlhRtnYZk=
+github.com/Azure/go-autorest/autorest/adal v0.9.21/go.mod h1:zua7mBUaCc5YnSLKYgGJR/w5ePdMDA6H56upLsHzA9U=
 github.com/Azure/go-autorest/autorest/azure/auth v0.5.10 h1:F9A3Z++TtAoFysBsNOIJILoHuYBaYvhVGsMGEqPtIS8=
 github.com/Azure/go-autorest/autorest/azure/auth v0.5.10/go.mod h1:zQXYYNX9kXzRMrJNVXWUfNy38oPMF5/2TeZ4Wylc9fE=
 github.com/Azure/go-autorest/autorest/azure/cli v0.4.2 h1:dMOmEJfkLKW/7JsokJqkyoYSgmR08hi9KrhjZb+JALY=
diff --git a/test/e2e/go.mod b/test/e2e/go.mod
index 7b140d00..90f9d87c 100644
--- a/test/e2e/go.mod
+++ b/test/e2e/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/Azure/aad-pod-identity v1.8.5
 	github.com/Azure/azure-sdk-for-go v57.2.0+incompatible
 	github.com/Azure/go-autorest/autorest v0.11.28
-	github.com/Azure/go-autorest/autorest/adal v0.9.18
+	github.com/Azure/go-autorest/autorest/adal v0.9.21
 	github.com/Azure/go-autorest/autorest/azure/auth v0.5.10
 	github.com/Azure/go-autorest/autorest/to v0.4.0
 	github.com/gofrs/uuid v4.0.0+incompatible // indirect
diff --git a/test/e2e/go.sum b/test/e2e/go.sum
index 19159472..6fd4ec19 100644
--- a/test/e2e/go.sum
+++ b/test/e2e/go.sum
@@ -49,8 +49,9 @@ github.com/Azure/go-autorest/autorest v0.11.28 h1:ndAExarwr5Y+GaHE6VCaY1kyS/HwwG
 github.com/Azure/go-autorest/autorest v0.11.28/go.mod h1:MrkzG3Y3AH668QyF9KRk5neJnGgmhQ6krbhR8Q5eMvA=
 github.com/Azure/go-autorest/autorest/adal v0.9.5/go.mod h1:B7KF7jKIeC9Mct5spmyCB/A8CG/sEz1vwIRGv/bbw7A=
 github.com/Azure/go-autorest/autorest/adal v0.9.13/go.mod h1:W/MM4U6nLxnIskrw4UwWzlHfGjwUS50aOsc/I3yuU8M=
-github.com/Azure/go-autorest/autorest/adal v0.9.18 h1:kLnPsRjzZZUF3K5REu/Kc+qMQrvuza2bwSnNdhmzLfQ=
 github.com/Azure/go-autorest/autorest/adal v0.9.18/go.mod h1:XVVeme+LZwABT8K5Lc3hA4nAe8LDBVle26gTrguhhPQ=
+github.com/Azure/go-autorest/autorest/adal v0.9.21 h1:jjQnVFXPfekaqb8vIsv2G1lxshoW+oGv4MDlhRtnYZk=
+github.com/Azure/go-autorest/autorest/adal v0.9.21/go.mod h1:zua7mBUaCc5YnSLKYgGJR/w5ePdMDA6H56upLsHzA9U=
 github.com/Azure/go-autorest/autorest/azure/auth v0.5.10 h1:F9A3Z++TtAoFysBsNOIJILoHuYBaYvhVGsMGEqPtIS8=
 github.com/Azure/go-autorest/autorest/azure/auth v0.5.10/go.mod h1:zQXYYNX9kXzRMrJNVXWUfNy38oPMF5/2TeZ4Wylc9fE=
 github.com/Azure/go-autorest/autorest/azure/cli v0.4.2 h1:dMOmEJfkLKW/7JsokJqkyoYSgmR08hi9KrhjZb+JALY=