diff --git a/tests/main.py b/tests/main.py
index dafe129a..9356c52f 100755
--- a/tests/main.py
+++ b/tests/main.py
@@ -6,6 +6,7 @@ from os import getcwd, _exit
 from os.path import isfile
 from traceback import format_exc
 from json import loads
+from subprocess import run
 path.append(getcwd() + "/utils")
 path.append(getcwd() + "/tests")
 
@@ -26,6 +27,8 @@ if not test_type in ["linux", "docker", "autoconf", "swarm", "kubernetes", "ansi
     log("TESTS", "❌", "Wrong type argument " + test_type)
     exit(1)
 
+run("docker system prune", shell=True)
+
 log("TESTS", "ℹ️", "Starting tests for " + test_type + " ...")
 ret = False
 end_fun = None
@@ -97,4 +100,6 @@ if not ret :
     log("TESTS", "❌", "Test.end() failed")
     exit(1)
 
-log("TESTS", "ℹ️", "All tests finished for " + test_type + " !")
\ No newline at end of file
+log("TESTS", "ℹ️", "All tests finished for " + test_type + " !")
+
+run("docker system prune", shell=True)
\ No newline at end of file