diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c0ce45d42..3f233c8c30 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## master (unreleased)
 
+## 1.8.0 (2020-09-04)
+
 ### New features
 
 * [#140](https://github.com/rubocop-hq/rubocop-performance/pull/140): Add new `Performance/CollectionLiteralInLoop` cop. ([@fatkodima][])
diff --git a/docs/antora.yml b/docs/antora.yml
index 8029079a95..0f41da11f9 100644
--- a/docs/antora.yml
+++ b/docs/antora.yml
@@ -2,6 +2,6 @@ name: rubocop-performance
 title: RuboCop Performance
 # We always provide version without patch here (e.g. 1.1),
 # as patch versions should not appear in the docs.
-version: master
+version: '1.8'
 nav:
   - modules/ROOT/nav.adoc
diff --git a/lib/rubocop/performance/version.rb b/lib/rubocop/performance/version.rb
index cd3a62dbc1..ca2b3b4bda 100644
--- a/lib/rubocop/performance/version.rb
+++ b/lib/rubocop/performance/version.rb
@@ -3,7 +3,7 @@
 module RuboCop
   module Performance
     module Version
-      STRING = '1.7.1'
+      STRING = '1.8.0'
     end
   end
 end
diff --git a/relnotes/v1.8.0.md b/relnotes/v1.8.0.md
new file mode 100644
index 0000000000..e19914ce8b
--- /dev/null
+++ b/relnotes/v1.8.0.md
@@ -0,0 +1,16 @@
+### New features
+
+* [#140](https://github.com/rubocop-hq/rubocop-performance/pull/140): Add new `Performance/CollectionLiteralInLoop` cop. ([@fatkodima][])
+* [#137](https://github.com/rubocop-hq/rubocop-performance/pull/137): Add new `Performance/Sum` cop. ([@fatkodima][])
+
+### Bug fixes
+
+* [#159](https://github.com/rubocop-hq/rubocop-performance/pull/159): Fix a false positive for `Performance/AncestorsInclude` when receiver is a variable. ([@koic][])
+
+### Changes
+
+* [#157](https://github.com/rubocop-hq/rubocop-performance/pull/157): Extend `Performance/Detect` cop with check for `filter` method and `Performance/Count` cop with checks for `find_all` and `filter` methods. ([@fatkodima][])
+* [#154](https://github.com/rubocop-hq/rubocop-performance/pull/154): Require RuboCop 0.87 or higher. ([@koic][])
+
+[@fatkodima]: https://github.com/fatkodima
+[@koic]: https://github.com/koic