diff --git a/plugins/python-build/bin/python-build b/plugins/python-build/bin/python-build
index a866a017..3f325ecd 100755
--- a/plugins/python-build/bin/python-build
+++ b/plugins/python-build/bin/python-build
@@ -339,14 +339,14 @@ http_head_aria2c() {
   options=""
   [ -n "${IPV4}" ] && options="--disable-ipv6=true"
   [ -n "${IPV6}" ] && options="--disable-ipv6=false"
-  aria2c -q --dry-run  ${options} "$1" >&4 2>&1
+  aria2c --dry-run  ${options} "$1" >&4 2>&1
 }
 
 http_get_aria2c() {
   options=""
   [ -n "${IPV4}" ] && options="--disable-ipv6=true"
   [ -n "${IPV6}" ] && options="--disable-ipv6=false"
-  aria2c -q -o "${2:--}" ${options} "$1"
+  aria2c -o "${2:--}" ${options} "$1"
 }
 
 http_head_curl() {
diff --git a/plugins/python-build/test/cache.bats b/plugins/python-build/test/cache.bats
index 4795f80c..c810903f 100644
--- a/plugins/python-build/test/cache.bats
+++ b/plugins/python-build/test/cache.bats
@@ -10,7 +10,7 @@ setup() {
 
 
 @test "packages are saved to download cache" {
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/without-checksum
 
@@ -57,8 +57,8 @@ setup() {
   local checksum="ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5"
 
   stub shasum true "echo invalid" "echo $checksum"
-  stub aria2c "-q --dry-run * : true" \
-    "-q -o * https://?*/$checksum : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$3"
+  stub aria2c "--dry-run * : true" \
+    "-o * https://?*/$checksum : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$2"
 
   touch "${PYTHON_BUILD_CACHE_PATH}/package-1.0.0.tar.gz"
 
@@ -75,7 +75,7 @@ setup() {
 
 
 @test "nonexistent cache directory is ignored" {
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   export PYTHON_BUILD_CACHE_PATH="${TMP}/nonexistent"
 
diff --git a/plugins/python-build/test/checksum.bats b/plugins/python-build/test/checksum.bats
index bca47a8a..a9b0ca25 100644
--- a/plugins/python-build/test/checksum.bats
+++ b/plugins/python-build/test/checksum.bats
@@ -6,7 +6,7 @@ export PYTHON_BUILD_CACHE_PATH=
 
 
 @test "package URL without checksum" {
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/without-checksum
 
@@ -19,7 +19,7 @@ export PYTHON_BUILD_CACHE_PATH=
 
 @test "package URL with valid checksum" {
   stub shasum true "echo ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5"
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/with-checksum
 
@@ -33,7 +33,7 @@ export PYTHON_BUILD_CACHE_PATH=
 
 @test "package URL with invalid checksum" {
   stub shasum true "echo ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5"
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/with-invalid-checksum
 
@@ -47,7 +47,7 @@ export PYTHON_BUILD_CACHE_PATH=
 
 @test "package URL with checksum but no shasum support" {
   stub shasum false
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/with-checksum
 
@@ -61,7 +61,7 @@ export PYTHON_BUILD_CACHE_PATH=
 
 @test "package URL with valid md5 checksum" {
   stub md5 true "echo 83e6d7725e20166024a1eb74cde80677"
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/with-md5-checksum
 
@@ -75,7 +75,7 @@ export PYTHON_BUILD_CACHE_PATH=
 
 @test "package URL with md5 checksum but no md5 support" {
   stub md5 false
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/with-md5-checksum
 
@@ -89,7 +89,7 @@ export PYTHON_BUILD_CACHE_PATH=
 
 @test "package with invalid checksum" {
   stub shasum true "echo invalid"
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/with-checksum
 
@@ -126,7 +126,7 @@ DEF
   stub shasum true \
     "echo invalid" \
     "echo ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5"
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   export -n PYTHON_BUILD_CACHE_PATH
   export PYTHON_BUILD_BUILD_PATH="${TMP}/build"
@@ -145,7 +145,7 @@ DEF
 }
 
 @test "package URL with checksum of unexpected length" {
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   run_inline_definition <<DEF
 install_package "package-1.0.0" "http://example.com/packages/package-1.0.0.tar.gz#checksum_of_unexpected_length" copy
diff --git a/plugins/python-build/test/mirror.bats b/plugins/python-build/test/mirror.bats
index 3af705f1..3310728d 100644
--- a/plugins/python-build/test/mirror.bats
+++ b/plugins/python-build/test/mirror.bats
@@ -8,7 +8,7 @@ export PYTHON_BUILD_MIRROR_URL=http://mirror.example.com
 
 @test "package URL without checksum bypasses mirror" {
   stub shasum true
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/without-checksum
   echo "$output" >&2
@@ -23,7 +23,7 @@ export PYTHON_BUILD_MIRROR_URL=http://mirror.example.com
 
 @test "package URL with checksum but no shasum support bypasses mirror" {
   stub shasum false
-  stub aria2c "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/with-checksum
 
@@ -40,8 +40,8 @@ export PYTHON_BUILD_MIRROR_URL=http://mirror.example.com
   local mirror_url="${PYTHON_BUILD_MIRROR_URL}/$checksum"
 
   stub shasum true "echo $checksum"
-  stub aria2c "-q --dry-run $mirror_url : true" \
-    "-q -o * $mirror_url : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$3"
+  stub aria2c "--dry-run $mirror_url : true" \
+    "-o * $mirror_url : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$2"
 
   install_fixture definitions/with-checksum
 
@@ -58,8 +58,8 @@ export PYTHON_BUILD_MIRROR_URL=http://mirror.example.com
   local mirror_url="${PYTHON_BUILD_MIRROR_URL}/$checksum"
 
   stub shasum true "echo $checksum"
-  stub aria2c "-q --dry-run $mirror_url : false" \
-    "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "--dry-run $mirror_url : false" \
+    "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/with-checksum
 
@@ -76,9 +76,9 @@ export PYTHON_BUILD_MIRROR_URL=http://mirror.example.com
   local mirror_url="${PYTHON_BUILD_MIRROR_URL}/$checksum"
 
   stub shasum true "echo invalid" "echo $checksum"
-  stub aria2c "-q --dry-run $mirror_url : true" \
-    "-q -o * $mirror_url : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$3" \
-    "-q -o * http://example.com/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "--dry-run $mirror_url : true" \
+    "-o * $mirror_url : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$2" \
+    "-o * http://example.com/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   install_fixture definitions/with-checksum
   echo "$output" >&2
@@ -96,8 +96,8 @@ export PYTHON_BUILD_MIRROR_URL=http://mirror.example.com
   local checksum="ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5"
 
   stub shasum true "echo $checksum"
-  stub aria2c "-q --dry-run : true" \
-    "-q -o * https://?*/$checksum : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$3" \
+  stub aria2c "--dry-run : true" \
+    "-o * https://?*/$checksum : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$2" \
 
   install_fixture definitions/with-checksum
 
@@ -114,7 +114,7 @@ export PYTHON_BUILD_MIRROR_URL=http://mirror.example.com
   local checksum="ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5"
 
   stub shasum true "echo $checksum"
-  stub aria2c "-q -o * https://www.python.org/* : cp $FIXTURE_ROOT/\${4##*/} \$3"
+  stub aria2c "-o * https://www.python.org/* : cp $FIXTURE_ROOT/\${3##*/} \$2"
 
   run_inline_definition <<DEF
 install_package "package-1.0.0" "https://www.python.org/packages/package-1.0.0.tar.gz#ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5" copy