diff --git a/webserv/handler/CgiProcess.cpp b/webserv/handler/CgiProcess.cpp
index 79681fc..6c00502 100644
--- a/webserv/handler/CgiProcess.cpp
+++ b/webserv/handler/CgiProcess.cpp
@@ -62,6 +62,8 @@ void CgiProcess::spawn()
     }
     if (pid_ == 0)
     {
+        int flags = fcntl(pipeStdin[0], F_GETFL, 0);
+        if (flags != -1) {fcntl(pipeStdin[0], F_SETFL, flags & ~O_NONBLOCK);}
         dup2(pipeStdin[0], STDIN_FILENO);
         dup2(pipeStdout[1], STDOUT_FILENO);
         dup2(pipeStderr[1], STDERR_FILENO);