diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8b3abd34480..bf0418fdc84 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,7 @@
 * [#8642](https://github.com/rubocop-hq/rubocop/issues/8642): Fix a false negative for `Style/SpaceInsideHashLiteralBraces` when a correct empty hash precedes the incorrect hash. ([@dvandersluis][])
 * [#8683](https://github.com/rubocop-hq/rubocop/issues/8683): Make naming cops work with non-ascii characters. ([@tejasbubane][])
 * [#8626](https://github.com/rubocop-hq/rubocop/issues/8626): Fix false negatives for `Lint/UselessMethodDefinition`. ([@marcandre][])
+* [#8698](https://github.com/rubocop-hq/rubocop/pull/8698): Fix cache to avoid encoding exception. ([@marcandre][])
 
 ### Changes
 
diff --git a/lib/rubocop/result_cache.rb b/lib/rubocop/result_cache.rb
index 1f85d9b59cd..643906996df 100644
--- a/lib/rubocop/result_cache.rb
+++ b/lib/rubocop/result_cache.rb
@@ -176,7 +176,10 @@ def rubocop_checksum
           rubocop_extra_features
             .select { |path| File.file?(path) }
             .sort!
-            .each { |path| digest << Zlib.crc32(IO.read(path)).to_s } # mtime not reliable
+            .each do |path|
+              content = File.open(path, 'rb', &:read)
+              digest << Zlib.crc32(content).to_s # mtime not reliable
+            end
           digest << RuboCop::Version::STRING << RuboCop::AST::Version::STRING
           digest.hexdigest
         end