diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 9158f088..859ac3df 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -5,7 +5,3 @@ repos:
     -   id: check-yaml
     -   id: end-of-file-fixer
     -   id: trailing-whitespace
-# - repo: https://github.com/pocc/pre-commit-hooks
-#   rev: master
-#   hooks:
-#   - id: clang-format
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 8c066b5d..0df94b07 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Changelog
 All changes to this project will be documented in this file.
 
+## [9.0.1] - 2020-03-24
+
+(socket) selectInterrupt member is an unique_ptr instead of being a shared_ptr
+
 ## [9.0.0] - 2020-03-23
 
 (websocket) reset per-message deflate codec everytime we connect to a server/client
diff --git a/ixwebsocket/IXSelectInterruptFactory.cpp b/ixwebsocket/IXSelectInterruptFactory.cpp
index b0b51458..0cd4a278 100644
--- a/ixwebsocket/IXSelectInterruptFactory.cpp
+++ b/ixwebsocket/IXSelectInterruptFactory.cpp
@@ -14,12 +14,12 @@
 
 namespace ix
 {
-    std::shared_ptr<SelectInterrupt> createSelectInterrupt()
+    SelectInterruptPtr createSelectInterrupt()
     {
 #if defined(__linux__) || defined(__APPLE__)
-        return std::make_shared<SelectInterruptPipe>();
+        return std::make_unique<SelectInterruptPipe>();
 #else
-        return std::make_shared<SelectInterrupt>();
+        return std::make_unique<SelectInterrupt>();
 #endif
     }
 } // namespace ix
diff --git a/ixwebsocket/IXSelectInterruptFactory.h b/ixwebsocket/IXSelectInterruptFactory.h
index f3e83b8f..5faf1d6e 100644
--- a/ixwebsocket/IXSelectInterruptFactory.h
+++ b/ixwebsocket/IXSelectInterruptFactory.h
@@ -11,5 +11,6 @@
 namespace ix
 {
     class SelectInterrupt;
-    std::shared_ptr<SelectInterrupt> createSelectInterrupt();
+    using SelectInterruptPtr = std::unique_ptr<SelectInterrupt>;
+    SelectInterruptPtr createSelectInterrupt();
 } // namespace ix
diff --git a/ixwebsocket/IXSocket.cpp b/ixwebsocket/IXSocket.cpp
index f5cde89c..2c297df1 100644
--- a/ixwebsocket/IXSocket.cpp
+++ b/ixwebsocket/IXSocket.cpp
@@ -46,7 +46,7 @@ namespace ix
     PollResultType Socket::poll(bool readyToRead,
                                 int timeoutMs,
                                 int sockfd,
-                                std::shared_ptr<SelectInterrupt> selectInterrupt)
+                                const SelectInterruptPtr& selectInterrupt)
     {
         //
         // We used to use ::select to poll but on Android 9 we get large fds out of
diff --git a/ixwebsocket/IXSocket.h b/ixwebsocket/IXSocket.h
index 595d6398..84b0b737 100644
--- a/ixwebsocket/IXSocket.h
+++ b/ixwebsocket/IXSocket.h
@@ -38,6 +38,7 @@ typedef SSIZE_T ssize_t;
 namespace ix
 {
     class SelectInterrupt;
+    using SelectInterruptPtr = std::unique_ptr<SelectInterrupt>;
 
     enum class PollResultType
     {
@@ -93,7 +94,7 @@ namespace ix
         static PollResultType poll(bool readyToRead,
                                    int timeoutMs,
                                    int sockfd,
-                                   std::shared_ptr<SelectInterrupt> selectInterrupt = nullptr);
+                                   const SelectInterruptPtr& selectInterrupt);
 
 
         // Used as special codes for pipe communication
@@ -112,6 +113,6 @@ namespace ix
         std::vector<uint8_t> _readBuffer;
         static constexpr size_t kChunkSize = 1 << 15;
 
-        std::shared_ptr<SelectInterrupt> _selectInterrupt;
+        SelectInterruptPtr _selectInterrupt;
     };
 } // namespace ix
diff --git a/ixwebsocket/IXSocketConnect.cpp b/ixwebsocket/IXSocketConnect.cpp
index 1d887b7e..39a302be 100644
--- a/ixwebsocket/IXSocketConnect.cpp
+++ b/ixwebsocket/IXSocketConnect.cpp
@@ -9,6 +9,7 @@
 #include "IXDNSLookup.h"
 #include "IXNetSystem.h"
 #include "IXSocket.h"
+#include "IXSelectInterrupt.h"
 #include <fcntl.h>
 #include <string.h>
 #include <sys/types.h>
@@ -64,7 +65,8 @@ namespace ix
 
             int timeoutMs = 10;
             bool readyToRead = false;
-            PollResultType pollResult = Socket::poll(readyToRead, timeoutMs, fd);
+            auto selectInterrupt = std::make_unique<SelectInterrupt>();
+            PollResultType pollResult = Socket::poll(readyToRead, timeoutMs, fd, selectInterrupt);
 
             if (pollResult == PollResultType::Timeout)
             {
diff --git a/ixwebsocket/IXSocketServer.cpp b/ixwebsocket/IXSocketServer.cpp
index 8eecab0f..776f3857 100644
--- a/ixwebsocket/IXSocketServer.cpp
+++ b/ixwebsocket/IXSocketServer.cpp
@@ -11,6 +11,7 @@
 #include "IXSocket.h"
 #include "IXSocketConnect.h"
 #include "IXSocketFactory.h"
+#include "IXSelectInterrupt.h"
 #include <assert.h>
 #include <sstream>
 #include <stdio.h>
@@ -257,7 +258,8 @@ namespace ix
             // Use poll to check whether a new connection is in progress
             int timeoutMs = 10;
             bool readyToRead = true;
-            PollResultType pollResult = Socket::poll(readyToRead, timeoutMs, _serverFd);
+            auto selectInterrupt = std::make_unique<SelectInterrupt>();
+            PollResultType pollResult = Socket::poll(readyToRead, timeoutMs, _serverFd, selectInterrupt);
 
             if (pollResult == PollResultType::Error)
             {
diff --git a/ixwebsocket/IXWebSocketVersion.h b/ixwebsocket/IXWebSocketVersion.h
index 099b5051..b53a1269 100644
--- a/ixwebsocket/IXWebSocketVersion.h
+++ b/ixwebsocket/IXWebSocketVersion.h
@@ -6,4 +6,4 @@
 
 #pragma once
 
-#define IX_WEBSOCKET_VERSION "9.0.0"
+#define IX_WEBSOCKET_VERSION "9.0.1"