diff --git a/src/backend/libsisyphus.py b/src/backend/libsisyphus.py
index ac7d7b2..1d05b8c 100755
--- a/src/backend/libsisyphus.py
+++ b/src/backend/libsisyphus.py
@@ -192,28 +192,28 @@ def rescueDB():
 def startInstall(pkgList):
     syncAll()
     portageExec = subprocess.Popen(['emerge', '-aq'] + pkgList)
-    portageExec.communicate()
+    portageExec.wait()
     syncLocalDatabase()
 
 # call portage to uninstall the package(s) (CLI frontend)
 
 def startUninstall(pkgList):
     portageExec = subprocess.Popen(['emerge', '--depclean', '-aq'] + pkgList)
-    portageExec.communicate()
+    portageExec.wait()
     syncLocalDatabase()
 
 # call portage to force-uninstall the package(s) (CLI frontend)
 
 def startUninstallForce(pkgList):
     portageExec = subprocess.Popen(['emerge', '--unmerge', '-aq'] + pkgList)
-    portageExec.communicate()
+    portageExec.wait()
     syncLocalDatabase()
 
 # call portage to remove orphan package(s) (CLI frontend)
 
 def removeOrphans():
     portageExec = subprocess.Popen(['emerge', '--depclean', '-aq'])
-    portageExec.communicate()
+    portageExec.wait()
     syncLocalDatabase()
 
 # call portage to perform a system upgrade (CLI frontend)
@@ -221,7 +221,7 @@ def removeOrphans():
 def startUpgrade():
     syncAll()
     portageExec = subprocess.Popen(['emerge', '-uDaNq', '--backtrack=100', '--with-bdeps=y', '@world'])
-    portageExec.communicate()
+    portageExec.wait()
     syncLocalDatabase()
 
 # call portage to search for package(s) (CLI frontend)
diff --git a/src/frontend/gui/sisyphus-gui.py b/src/frontend/gui/sisyphus-gui.py
index 406ea7a..0f290c8 100755
--- a/src/frontend/gui/sisyphus-gui.py
+++ b/src/frontend/gui/sisyphus-gui.py
@@ -377,6 +377,7 @@ def startInstall(self):
         atexit.register(portageKill, portageExec)
         for portageOutput in io.TextIOWrapper(portageExec.stdout, encoding="utf-8"):
             self.strReady.emit(portageOutput.rstrip())
+        portageExec.wait()
         syncLocalDatabase()
         self.finished.emit()
 
@@ -389,6 +390,7 @@ def startUninstall(self):
         atexit.register(portageKill, portageExec)
         for portageOutput in io.TextIOWrapper(portageExec.stdout, encoding="utf-8"):
             self.strReady.emit(portageOutput.rstrip())
+        portageExec.wait()
         syncLocalDatabase()
         self.finished.emit()
 
@@ -400,6 +402,7 @@ def startUpgrade(self):
         atexit.register(portageKill, portageExec)
         for portageOutput in io.TextIOWrapper(portageExec.stdout, encoding="utf-8"):
             self.strReady.emit(portageOutput.rstrip())
+        portageExec.wait()
         syncLocalDatabase()
         self.finished.emit()
 
@@ -411,6 +414,7 @@ def cleanOrphans(self):
         atexit.register(portageKill, portageExec)
         for portageOutput in io.TextIOWrapper(portageExec.stdout, encoding="utf-8"):
             self.strReady.emit(portageOutput.rstrip())
+        portageExec.wait()
         syncLocalDatabase()
         self.finished.emit()