diff --git a/.changes/0.20.0.md b/.changes/0.20.0.md
new file mode 100644
index 000000000..2c3f22686
--- /dev/null
+++ b/.changes/0.20.0.md
@@ -0,0 +1,11 @@
+## 0.20.0 (December 14, 2023)
+
+NOTES:
+
+* tfprotov5+tfprotov6: An upcoming release will require the FunctionServer implementation as part of ProviderServer. ([#351](https://github.com/hashicorp/terraform-plugin-go/issues/351))
+* Provider-defined function support is in technical preview and offered without compatibility promises until Terraform 1.8 is generally available. ([#351](https://github.com/hashicorp/terraform-plugin-go/issues/351))
+
+FEATURES:
+
+* tfprotov5+tfprotov6: Upgraded protocols and added types to support provider-defined functions ([#351](https://github.com/hashicorp/terraform-plugin-go/issues/351))
+
diff --git a/.changes/unreleased/FEATURES-20231026-164300.yaml b/.changes/unreleased/FEATURES-20231026-164300.yaml
deleted file mode 100644
index b50d08366..000000000
--- a/.changes/unreleased/FEATURES-20231026-164300.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: FEATURES
-body: 'tfprotov5+tfprotov6: Upgraded protocols and added types to support
-  provider-defined functions'
-time: 2023-10-26T16:43:00.024481-04:00
-custom:
-  Issue: "351"
diff --git a/.changes/unreleased/NOTES-20231026-164359.yaml b/.changes/unreleased/NOTES-20231026-164359.yaml
deleted file mode 100644
index e66447d5c..000000000
--- a/.changes/unreleased/NOTES-20231026-164359.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: NOTES
-body: 'tfprotov5+tfprotov6: An upcoming release will require the FunctionServer
-  implementation as part of ProviderServer.'
-time: 2023-10-26T16:43:59.845786-04:00
-custom:
-  Issue: "351"
diff --git a/.changes/unreleased/NOTES-20231214-083437.yaml b/.changes/unreleased/NOTES-20231214-083437.yaml
deleted file mode 100644
index da5583bf5..000000000
--- a/.changes/unreleased/NOTES-20231214-083437.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: NOTES
-body: Provider-defined function support is in technical preview and offered without
-  compatibility promises until Terraform 1.8 is generally available.
-time: 2023-12-14T08:34:37.329545-05:00
-custom:
-  Issue: "351"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1ec94bfe2..e5e11ea4e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,14 @@
+## 0.20.0 (December 14, 2023)
+
+NOTES:
+
+* tfprotov5+tfprotov6: An upcoming release will require the FunctionServer implementation as part of ProviderServer. ([#351](https://github.com/hashicorp/terraform-plugin-go/issues/351))
+* Provider-defined function support is in technical preview and offered without compatibility promises until Terraform 1.8 is generally available. ([#351](https://github.com/hashicorp/terraform-plugin-go/issues/351))
+
+FEATURES:
+
+* tfprotov5+tfprotov6: Upgraded protocols and added types to support provider-defined functions ([#351](https://github.com/hashicorp/terraform-plugin-go/issues/351))
+
 ## 0.19.1 (November 15, 2023)
 
 NOTES: