diff --git a/go.mod b/go.mod
index 3b42818b..daffef4f 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,7 @@
 module github.com/juju/terraform-provider-juju
 
 go 1.21
+toolchain go1.22.5
 
 require (
 	github.com/bflad/tfproviderlint v0.30.0
@@ -31,7 +32,7 @@ require (
 	github.com/juju/version/v2 v2.0.1
 	github.com/rs/zerolog v1.33.0
 	github.com/stretchr/testify v1.9.0
-	go.uber.org/mock v0.4.0
+	go.uber.org/mock v0.5.0
 	gopkg.in/httprequest.v1 v1.2.1
 	gopkg.in/macaroon.v2 v2.1.0
 	gopkg.in/yaml.v2 v2.4.0
diff --git a/go.sum b/go.sum
index d4285593..bd71b362 100644
--- a/go.sum
+++ b/go.sum
@@ -664,8 +664,8 @@ go.opentelemetry.io/otel/metric v1.21.0 h1:tlYWfeo+Bocx5kLEloTjbcDwBuELRrIFxwdQ3
 go.opentelemetry.io/otel/metric v1.21.0/go.mod h1:o1p3CA8nNHW8j5yuQLdc1eeqEaPfzug24uvsyIEJRWM=
 go.opentelemetry.io/otel/trace v1.21.0 h1:WD9i5gzvoUPuXIXH24ZNBudiarZDKuekPqi/E8fpfLc=
 go.opentelemetry.io/otel/trace v1.21.0/go.mod h1:LGbsEB0f9LGjN+OZaQQ26sohbOmiMR+BaslueVtS/qQ=
-go.uber.org/mock v0.4.0 h1:VcM4ZOtdbR4f6VXfiOpwpVJDL6lCReaZ6mw31wqh7KU=
-go.uber.org/mock v0.4.0/go.mod h1:a6FSlNadKUHUa9IP5Vyt1zh4fC7uAwxMutEAscFbkZc=
+go.uber.org/mock v0.5.0 h1:KAMbZvZPyBPWgD14IrIQ38QCyjwpvVVV6K/bHl1IwQU=
+go.uber.org/mock v0.5.0/go.mod h1:ge71pBPLYDk7QIi1LupWxdAykm7KIEFchiOqd6z7qMM=
 golang.org/x/crypto v0.0.0-20180723164146-c126467f60eb/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190404164418-38d8ce5564a5/go.mod h1:WFFai1msRO1wXaEeE5yQxYXgSfI8pQAWXbQop6sCtWE=