diff --git a/CHANGELOG.md b/CHANGELOG.md
index c3feb3e..c1ed162 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Change log
 
+## [Unreleased]
+
+### Fixed
+* Fix "can't alloc thread" error in Command#run from non-main thread's rescue/ensure block 
+
 ## [v0.10.1] - 2021-02-14
 
 ### Fixed
diff --git a/lib/tty/command/process_runner.rb b/lib/tty/command/process_runner.rb
index 0b6622f..454d25b 100644
--- a/lib/tty/command/process_runner.rb
+++ b/lib/tty/command/process_runner.rb
@@ -163,7 +163,7 @@ def read_streams(stdout, stderr)
       #
       # @api private
       def read_stream(stream, handler)
-        Thread.new do
+        Thread.start do
           if Thread.current.respond_to?(:report_on_exception)
             Thread.current.report_on_exception = false
           end