diff --git a/CHANGELOG.md b/CHANGELOG.md
index ba29ba5995e..3759b88d365 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,7 @@
 ### Changes
 
 * [#6597](https://github.com/rubocop-hq/rubocop/issues/6597): `Style/LineEndConcatenation` is now known to be unsafe for auto-correct. ([@jaredbeck][])
+* [#6725](https://github.com/rubocop-hq/rubocop/issues/6725): Mark `Style/SymbolProc` as unsafe for auto-correct. ([@drenmi][])
 
 ## 0.63.1 (2019-01-22)
 
diff --git a/config/default.yml b/config/default.yml
index f6510766816..76a41e0623b 100644
--- a/config/default.yml
+++ b/config/default.yml
@@ -4096,8 +4096,9 @@ Style/SymbolLiteral:
 Style/SymbolProc:
   Description: 'Use symbols as procs instead of blocks when possible.'
   Enabled: true
+  SafeAutoCorrect: false
   VersionAdded: '0.26'
-  VersionChanged: '0.40'
+  VersionChanged: '0.64'
   # A list of method names to be ignored by the check.
   # The names should be fairly unique, otherwise you'll end up ignoring lots of code.
   IgnoredMethods:
diff --git a/manual/cops_style.md b/manual/cops_style.md
index 4c38c8065cb..c097ca8624a 100644
--- a/manual/cops_style.md
+++ b/manual/cops_style.md
@@ -5912,7 +5912,7 @@ This cop checks symbol literal syntax.
 
 Enabled by default | Safe | Supports autocorrection | VersionAdded | VersionChanged
 --- | --- | --- | --- | ---
-Enabled | Yes | Yes  | 0.26 | 0.40
+Enabled | Yes | Yes (Unsafe) | 0.26 | 0.64
 
 Use symbols as procs when possible.