diff --git a/debian/tests/testsuite b/debian/tests/testsuite
index bc84beb2b..15c56b900 100755
--- a/debian/tests/testsuite
+++ b/debian/tests/testsuite
@@ -8,4 +8,7 @@ cd "$AUTOPKGTEST_TMP"
 
 cmake -DCMake_TEST_EXTERNAL_CMAKE=/usr/bin "$SRCDIR"
 make VERBOSE=1
+unset http_proxy
+unset https_proxy
+unset no_proxy
 CTEST_OUTPUT_ON_FAILURE=1 ctest -E '(CTestTestUpload|BootstrapTest)'