diff --git a/go.mod b/go.mod
index a5c60bce..aaa20557 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/hashicorp/terraform-plugin-testing
 
-go 1.24.0
+go 1.25
 
 require (
 	github.com/google/go-cmp v0.7.0
@@ -17,7 +17,7 @@ require (
 	github.com/hashicorp/terraform-plugin-log v0.10.0
 	github.com/hashicorp/terraform-plugin-sdk/v2 v2.39.0
 	github.com/mitchellh/go-testing-interface v1.14.1
-	github.com/zclconf/go-cty v1.17.0
+	github.com/zclconf/go-cty v1.18.0
 	golang.org/x/crypto v0.48.0
 )
 
diff --git a/go.sum b/go.sum
index a5d70246..2eb88933 100644
--- a/go.sum
+++ b/go.sum
@@ -153,8 +153,8 @@ github.com/vmihailenco/tagparser/v2 v2.0.0/go.mod h1:Wri+At7QHww0WTrCBeu4J6bNtoV
 github.com/xanzy/ssh-agent v0.3.3 h1:+/15pJfg/RsTxqYcX6fHqOXZwwMP+2VyYWJeWM2qQFM=
 github.com/xanzy/ssh-agent v0.3.3/go.mod h1:6dzNDKs0J9rVPHPhaGCukekBHKqfl+L3KghI1Bc68Uw=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
-github.com/zclconf/go-cty v1.17.0 h1:seZvECve6XX4tmnvRzWtJNHdscMtYEx5R7bnnVyd/d0=
-github.com/zclconf/go-cty v1.17.0/go.mod h1:wqFzcImaLTI6A5HfsRwB0nj5n0MRZFwmey8YoFPPs3U=
+github.com/zclconf/go-cty v1.18.0 h1:pJ8+HNI4gFoyRNqVE37wWbJWVw43BZczFo7KUoRczaA=
+github.com/zclconf/go-cty v1.18.0/go.mod h1:qpnV6EDNgC1sns/AleL1fvatHw72j+S+nS+MJ+T2CSg=
 github.com/zclconf/go-cty-debug v0.0.0-20240509010212-0d6042c53940 h1:4r45xpDWB6ZMSMNJFMOjqrGHynW3DIBuR2H9j0ug+Mo=
 github.com/zclconf/go-cty-debug v0.0.0-20240509010212-0d6042c53940/go.mod h1:CmBdvvj3nqzfzJ6nTCIwDTPZ56aVGvDrmztiO5g3qrM=
 go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ64=