diff --git a/ci/resources/stemcell-version-bump/go.mod b/ci/resources/stemcell-version-bump/go.mod
index 2c59ac25..5c0f4ee5 100644
--- a/ci/resources/stemcell-version-bump/go.mod
+++ b/ci/resources/stemcell-version-bump/go.mod
@@ -7,7 +7,7 @@ toolchain go1.24.1
 require (
 	cloud.google.com/go/storage v1.59.0
 	github.com/stretchr/testify v1.11.1
-	google.golang.org/api v0.259.0
+	google.golang.org/api v0.260.0
 )
 
 require (
@@ -32,7 +32,7 @@ require (
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.3.7 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.9 // indirect
 	github.com/googleapis/gax-go/v2 v2.16.0 // indirect
 	github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
diff --git a/ci/resources/stemcell-version-bump/go.sum b/ci/resources/stemcell-version-bump/go.sum
index ebc2dc85..d18465f0 100644
--- a/ci/resources/stemcell-version-bump/go.sum
+++ b/ci/resources/stemcell-version-bump/go.sum
@@ -61,8 +61,8 @@ github.com/google/s2a-go v0.1.9 h1:LGD7gtMgezd8a/Xak7mEWL0PjoTQFvpRudN895yqKW0=
 github.com/google/s2a-go v0.1.9/go.mod h1:YA0Ei2ZQL3acow2O62kdp9UlnvMmU7kA6Eutn0dXayM=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/googleapis/enterprise-certificate-proxy v0.3.7 h1:zrn2Ee/nWmHulBx5sAVrGgAa0f2/R35S4DJwfFaUPFQ=
-github.com/googleapis/enterprise-certificate-proxy v0.3.7/go.mod h1:MkHOF77EYAE7qfSuSS9PU6g4Nt4e11cnsDUowfwewLA=
+github.com/googleapis/enterprise-certificate-proxy v0.3.9 h1:TOpi/QG8iDcZlkQlGlFUti/ZtyLkliXvHDcyUIMuFrU=
+github.com/googleapis/enterprise-certificate-proxy v0.3.9/go.mod h1:MkHOF77EYAE7qfSuSS9PU6g4Nt4e11cnsDUowfwewLA=
 github.com/googleapis/gax-go/v2 v2.16.0 h1:iHbQmKLLZrexmb0OSsNGTeSTS0HO4YvFOG8g5E4Zd0Y=
 github.com/googleapis/gax-go/v2 v2.16.0/go.mod h1:o1vfQjjNZn4+dPnRdl/4ZD7S9414Y4xA+a/6Icj6l14=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
@@ -115,8 +115,8 @@ golang.org/x/time v0.14.0 h1:MRx4UaLrDotUKUdCIqzPC48t1Y9hANFKIRpNx+Te8PI=
 golang.org/x/time v0.14.0/go.mod h1:eL/Oa2bBBK0TkX57Fyni+NgnyQQN4LitPmob2Hjnqw4=
 gonum.org/v1/gonum v0.16.0 h1:5+ul4Swaf3ESvrOnidPp4GZbzf0mxVQpDCYUQE7OJfk=
 gonum.org/v1/gonum v0.16.0/go.mod h1:fef3am4MQ93R2HHpKnLk4/Tbh/s0+wqD5nfa6Pnwy4E=
-google.golang.org/api v0.259.0 h1:90TaGVIxScrh1Vn/XI2426kRpBqHwWIzVBzJsVZ5XrQ=
-google.golang.org/api v0.259.0/go.mod h1:LC2ISWGWbRoyQVpxGntWwLWN/vLNxxKBK9KuJRI8Te4=
+google.golang.org/api v0.260.0 h1:XbNi5E6bOVEj/uLXQRlt6TKuEzMD7zvW/6tNwltE4P4=
+google.golang.org/api v0.260.0/go.mod h1:Shj1j0Phr/9sloYrKomICzdYgsSDImpTxME8rGLaZ/o=
 google.golang.org/genproto v0.0.0-20251202230838-ff82c1b0f217 h1:GvESR9BIyHUahIb0NcTum6itIWtdoglGX+rnGxm2934=
 google.golang.org/genproto v0.0.0-20251202230838-ff82c1b0f217/go.mod h1:yJ2HH4EHEDTd3JiLmhds6NkJ17ITVYOdV3m3VKOnws0=
 google.golang.org/genproto/googleapis/api v0.0.0-20251202230838-ff82c1b0f217 h1:fCvbg86sFXwdrl5LgVcTEvNC+2txB5mgROGmRL5mrls=
diff --git a/ci/resources/stemcell-version-bump/vendor/google.golang.org/api/internal/version.go b/ci/resources/stemcell-version-bump/vendor/google.golang.org/api/internal/version.go
index 9100b0ae..1cbe3157 100644
--- a/ci/resources/stemcell-version-bump/vendor/google.golang.org/api/internal/version.go
+++ b/ci/resources/stemcell-version-bump/vendor/google.golang.org/api/internal/version.go
@@ -5,4 +5,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "0.259.0"
+const Version = "0.260.0"
diff --git a/ci/resources/stemcell-version-bump/vendor/modules.txt b/ci/resources/stemcell-version-bump/vendor/modules.txt
index e5c3d7b3..ee799e5d 100644
--- a/ci/resources/stemcell-version-bump/vendor/modules.txt
+++ b/ci/resources/stemcell-version-bump/vendor/modules.txt
@@ -158,7 +158,7 @@ github.com/google/s2a-go/stream
 # github.com/google/uuid v1.6.0
 ## explicit
 github.com/google/uuid
-# github.com/googleapis/enterprise-certificate-proxy v0.3.7
+# github.com/googleapis/enterprise-certificate-proxy v0.3.9
 ## explicit; go 1.23.0
 github.com/googleapis/enterprise-certificate-proxy/client
 github.com/googleapis/enterprise-certificate-proxy/client/util
@@ -304,7 +304,7 @@ golang.org/x/text/unicode/norm
 # golang.org/x/time v0.14.0
 ## explicit; go 1.24.0
 golang.org/x/time/rate
-# google.golang.org/api v0.259.0
+# google.golang.org/api v0.260.0
 ## explicit; go 1.24.0
 google.golang.org/api/googleapi
 google.golang.org/api/googleapi/transport