diff --git a/Modules/Battery/readers.swift b/Modules/Battery/readers.swift
index ecca47de..b3be2e76 100644
--- a/Modules/Battery/readers.swift
+++ b/Modules/Battery/readers.swift
@@ -158,6 +158,11 @@ public class ProcessReader: Reader<[TopProcess]> {
         self.popup = true
         
         let pipe = Pipe()
+        
+        defer {
+            pipe.fileHandleForReading.closeFile()
+        }
+        
         self.task.standardOutput = pipe
         self.task.launchPath = "/usr/bin/top"
         self.task.arguments = ["-o", "power", "-n", "\(self.numberOfProcesses)", "-stats", "pid,command,power"]
diff --git a/Modules/CPU/readers.swift b/Modules/CPU/readers.swift
index ad7ff9a5..5832b80d 100644
--- a/Modules/CPU/readers.swift
+++ b/Modules/CPU/readers.swift
@@ -176,6 +176,11 @@ public class ProcessReader: Reader<[TopProcess]> {
         let outputPipe = Pipe()
         let errorPipe = Pipe()
         
+        defer {
+            outputPipe.fileHandleForReading.closeFile()
+            errorPipe.fileHandleForReading.closeFile()
+        }
+        
         task.standardOutput = outputPipe
         task.standardError = errorPipe
         
diff --git a/Modules/Net/readers.swift b/Modules/Net/readers.swift
index 866af8cf..bb92fe7c 100644
--- a/Modules/Net/readers.swift
+++ b/Modules/Net/readers.swift
@@ -135,6 +135,11 @@ internal class UsageReader: Reader<Network_Usage> {
         let outputPipe = Pipe()
         let errorPipe = Pipe()
         
+        defer {
+            outputPipe.fileHandleForReading.closeFile()
+            errorPipe.fileHandleForReading.closeFile()
+        }
+        
         task.standardOutput = outputPipe
         task.standardError = errorPipe
         
@@ -299,6 +304,11 @@ public class ProcessReader: Reader<[Network_Process]> {
         let outputPipe = Pipe()
         let errorPipe = Pipe()
         
+        defer {
+            outputPipe.fileHandleForReading.closeFile()
+            errorPipe.fileHandleForReading.closeFile()
+        }
+        
         task.standardOutput = outputPipe
         task.standardError = errorPipe
         
diff --git a/Modules/RAM/readers.swift b/Modules/RAM/readers.swift
index a4ab05c4..e2e39a09 100644
--- a/Modules/RAM/readers.swift
+++ b/Modules/RAM/readers.swift
@@ -120,6 +120,11 @@ public class ProcessReader: Reader<[TopProcess]> {
         let outputPipe = Pipe()
         let errorPipe = Pipe()
         
+        defer {
+            outputPipe.fileHandleForReading.closeFile()
+            errorPipe.fileHandleForReading.closeFile()
+        }
+        
         task.standardOutput = outputPipe
         task.standardError = errorPipe
         
diff --git a/StatsKit/SystemKit.swift b/StatsKit/SystemKit.swift
index 2eb26354..53cd59eb 100644
--- a/StatsKit/SystemKit.swift
+++ b/StatsKit/SystemKit.swift
@@ -304,6 +304,11 @@ public class SystemKit {
         let outputPipe = Pipe()
         let errorPipe = Pipe()
         
+        defer {
+            outputPipe.fileHandleForReading.closeFile()
+            errorPipe.fileHandleForReading.closeFile()
+        }
+        
         task.standardOutput = outputPipe
         task.standardError = errorPipe