diff --git a/Makefile b/Makefile
index 301df6f..476b90e 100644
--- a/Makefile
+++ b/Makefile
@@ -17,13 +17,16 @@ check-poetry:
 	fi
 
 install-poetry:  ## install or update poetry
+	pip3 install -U pip
 	pip3 install -U poetry
 
 install: check-poetry  ## install project via poetry
 	poetry install
 
-update: install-poetry  ## update the sources and installation
+update: install-poetry  ## update the sources and installation and generate "conf/requirements.txt"
+	poetry run pip install -U pip
 	poetry update
+	poetry export -f requirements.txt --output conf/requirements.txt
 
 lint: ## Run code formatters and linter
 	poetry run flynt --fail-on-change --line_length=${MAX_LINE_LENGTH} .
diff --git a/conf/requirements.txt b/conf/requirements.txt
new file mode 100644
index 0000000..17b51d1
--- /dev/null
+++ b/conf/requirements.txt
@@ -0,0 +1,62 @@
+asgiref==3.3.1; python_version >= "3.6" and python_version < "4.0" \
+    --hash=sha256:5ee950735509d04eb673bd7f7120f8fa1c9e2df495394992c73234d526907e17 \
+    --hash=sha256:7162a3cb30ab0609f1a4c95938fd73e8604f63bdba516a7f7d64b83ff09478f0
+django-axes==5.10.0; python_version >= "3.6" and python_version < "4.0" \
+    --hash=sha256:8a62cd4cc78ef08007e8102def34be83832995eb6e3e0c814d605741b82a2796 \
+    --hash=sha256:3c81ddca8a9d7fd0019cb440f711cc873c3039546f7eacb3f2ec616bf0ec1b32
+django-ipware==3.0.2; python_version >= "3.6" and python_version < "4.0" \
+    --hash=sha256:c7df8e1410a8e5d6b1fbae58728402ea59950f043c3582e033e866f0f0cf5e94
+django-redis==4.12.1; python_version >= "3.5" \
+    --hash=sha256:306589c7021e6468b2656edc89f62b8ba67e8d5a1c8877e2688042263daa7a63 \
+    --hash=sha256:1133b26b75baa3664164c3f44b9d5d133d1b8de45d94d79f38d1adc5b1d502e5
+django==3.1.4; python_version >= "3.6" \
+    --hash=sha256:5c866205f15e7a7123f1eec6ab939d22d5bde1416635cab259684af66d8e48a2 \
+    --hash=sha256:edb10b5c45e7e9c0fb1dc00b76ec7449aca258a39ffd613dbd078c51d19c9f03
+gunicorn==20.0.4; python_version >= "3.4" \
+    --hash=sha256:cd4a810dd51bf497552cf3f863b575dabd73d6ad6a91075b65936b151cbf4f9c \
+    --hash=sha256:1904bb2b8a43658807108d59c3f3d56c2b6121a701161de0ddf9ad140073c626
+psycopg2-binary==2.8.6; (python_version >= "2.7" and python_full_version < "3.0.0") or (python_full_version >= "3.4.0") \
+    --hash=sha256:11b9c0ebce097180129e422379b824ae21c8f2a6596b159c7659e2e5a00e1aa0 \
+    --hash=sha256:d14b140a4439d816e3b1229a4a525df917d6ea22a0771a2a78332273fd9528a4 \
+    --hash=sha256:1fabed9ea2acc4efe4671b92c669a213db744d2af8a9fc5d69a8e9bc14b7a9db \
+    --hash=sha256:f5ab93a2cb2d8338b1674be43b442a7f544a0971da062a5da774ed40587f18f5 \
+    --hash=sha256:b4afc542c0ac0db720cf516dd20c0846f71c248d2b3d21013aa0d4ef9c71ca25 \
+    --hash=sha256:e74a55f6bad0e7d3968399deb50f61f4db1926acf4a6d83beaaa7df986f48b1c \
+    --hash=sha256:0deac2af1a587ae12836aa07970f5cb91964f05a7c6cdb69d8425ff4c15d4e2c \
+    --hash=sha256:ad20d2eb875aaa1ea6d0f2916949f5c08a19c74d05b16ce6ebf6d24f2c9f75d1 \
+    --hash=sha256:950bc22bb56ee6ff142a2cb9ee980b571dd0912b0334aa3fe0fe3788d860bea2 \
+    --hash=sha256:b8a3715b3c4e604bcc94c90a825cd7f5635417453b253499664f784fc4da0152 \
+    --hash=sha256:d1b4ab59e02d9008efe10ceabd0b31e79519da6fb67f7d8e8977118832d0f449 \
+    --hash=sha256:ac0c682111fbf404525dfc0f18a8b5f11be52657d4f96e9fcb75daf4f3984859 \
+    --hash=sha256:7d92a09b788cbb1aec325af5fcba9fed7203897bbd9269d5691bb1e3bce29550 \
+    --hash=sha256:aaa4213c862f0ef00022751161df35804127b78adf4a2755b9f991a507e425fd \
+    --hash=sha256:c2507d796fca339c8fb03216364cca68d87e037c1f774977c8fc377627d01c71 \
+    --hash=sha256:ee69dad2c7155756ad114c02db06002f4cded41132cc51378e57aad79cc8e4f4 \
+    --hash=sha256:e82aba2188b9ba309fd8e271702bd0d0fc9148ae3150532bbb474f4590039ffb \
+    --hash=sha256:d5227b229005a696cc67676e24c214740efd90b148de5733419ac9aaba3773da \
+    --hash=sha256:a0eb43a07386c3f1f1ebb4dc7aafb13f67188eab896e7397aa1ee95a9c884eb2 \
+    --hash=sha256:e1f57aa70d3f7cc6947fd88636a481638263ba04a742b4a37dd25c373e41491a \
+    --hash=sha256:833709a5c66ca52f1d21d41865a637223b368c0ee76ea54ca5bad6f2526c7679 \
+    --hash=sha256:ba28584e6bca48c59eecbf7efb1576ca214b47f05194646b081717fa628dfddf \
+    --hash=sha256:6a32f3a4cb2f6e1a0b15215f448e8ce2da192fd4ff35084d80d5e39da683e79b \
+    --hash=sha256:0e4dc3d5996760104746e6cfcdb519d9d2cd27c738296525d5867ea695774e67 \
+    --hash=sha256:cec7e622ebc545dbb4564e483dd20e4e404da17ae07e06f3e780b2dacd5cee66 \
+    --hash=sha256:ba381aec3a5dc29634f20692349d73f2d21f17653bda1decf0b52b11d694541f \
+    --hash=sha256:a0c50db33c32594305b0ef9abc0cb7db13de7621d2cadf8392a1d9b3c437ef77 \
+    --hash=sha256:2dac98e85565d5688e8ab7bdea5446674a83a3945a8f416ad0110018d1501b94 \
+    --hash=sha256:bd1be66dde2b82f80afb9459fc618216753f67109b859a361cf7def5c7968729 \
+    --hash=sha256:8cd0fb36c7412996859cb4606a35969dd01f4ea34d9812a141cd920c3b18be77 \
+    --hash=sha256:89705f45ce07b2dfa806ee84439ec67c5d9a0ef20154e0e475e2b2ed392a5b83 \
+    --hash=sha256:42ec1035841b389e8cc3692277a0bd81cdfe0b65d575a2c8862cec7a80e62e52 \
+    --hash=sha256:7312e931b90fe14f925729cde58022f5d034241918a5c4f9797cac62f6b3a9dd \
+    --hash=sha256:6422f2ff0919fd720195f64ffd8f924c1395d30f9a495f31e2392c2efafb5056 \
+    --hash=sha256:15978a1fbd225583dd8cdaf37e67ccc278b5abecb4caf6b2d6b8e2b948e953f6
+pytz==2020.5; python_version >= "3.6" and python_version < "4.0" \
+    --hash=sha256:16962c5fb8db4a8f63a26646d8886e9d769b6c511543557bc84e9569fb9a9cb4 \
+    --hash=sha256:180befebb1927b16f6b57101720075a984c019ac16b1b7575673bea42c6c3da5
+redis==3.5.3; python_version >= "3.5" and python_full_version < "3.0.0" or python_full_version >= "3.5.0" and python_version >= "3.5" \
+    --hash=sha256:432b788c4530cfe16d8d943a09d40ca6c16149727e4afe8c2c9d5580c59d9f24 \
+    --hash=sha256:0e7e0cfca8660dea8b7d5cd8c4f6c5e29e11f31158c0b0ae91a397f00e5a05a2
+sqlparse==0.4.1; python_version >= "3.6" and python_version < "4.0" \
+    --hash=sha256:017cde379adbd6a1f15a61873f43e8274179378e95ef3fede90b5aa64d304ed0 \
+    --hash=sha256:0f91fd2e829c44362cbcfab3e9ae12e22badaa8a29ad5ff599f9ec109f0454e8
diff --git a/scripts/_common.sh b/scripts/_common.sh
index bb2a443..3b3656a 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -25,15 +25,11 @@ log_file="${log_path}/django_ynh.log"
 #=================================================
 
 # dependencies used by the app
-pkg_dependencies="build-essential python3-dev python3-pip python3-venv git \
-	postgresql postgresql-contrib"
+pkg_dependencies="build-essential python3-dev python3-pip python3-venv git postgresql postgresql-contrib"
 
 # django_ynh's version for PIP and settings file
 django_ynh_version="0.8.2"
 
-# Extra python packages:
-pypi_extras="django-redis"
-
 #=================================================
 # Redis HELPERS
 #=================================================
diff --git a/scripts/install b/scripts/install
index 197e9f8..d7fa3ef 100755
--- a/scripts/install
+++ b/scripts/install
@@ -101,9 +101,10 @@ ynh_system_user_create --username="$app" --home_dir="$final_path" --use_shell
 #=================================================
 # PIP INSTALLATION
 #=================================================
-ynh_script_progression --message="Install django_ynh using PIP..." --weight=80
+ynh_script_progression --message="Install project via pip..." --weight=80
 
 python3 -m venv "${final_path}/venv"
+cp ../conf/requirements.txt "$final_path/requirements.txt"
 chown -R "$app" "$final_path"
 
 #run source in a 'sub shell'
@@ -112,9 +113,7 @@ chown -R "$app" "$final_path"
 	source "${final_path}/venv/bin/activate"
 	set -o nounset
 	ynh_exec_as $app $final_path/venv/bin/pip install --upgrade pip
-	ynh_exec_as $app $final_path/venv/bin/pip install --upgrade setuptools wheel psycopg2-binary
-	ynh_exec_as $app $final_path/venv/bin/pip install --upgrade django_ynh=="$django_ynh_version"
-	ynh_exec_as $app $final_path/venv/bin/pip install --upgrade ${pypi_extras}
+	ynh_exec_as $app $final_path/venv/bin/pip install -r "$final_path/requirements.txt"
 )
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 1ff3a2f..81c8b97 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -83,23 +83,21 @@ ynh_script_progression --message="Configuring a systemd service..."
 ynh_add_systemd_config --service="$app" --template="django_ynh.service"
 
 #=================================================
-# UPGRADE django_ynh
+# UPGRADE VENV
 #=================================================
-
-ynh_script_progression --message="Install django_ynh using PIP..." --weight=15
+ynh_script_progression --message="Upgrade project via pip..." --weight=80
 
 python3 -m venv "${final_path}/venv"
+cp ../conf/requirements.txt "$final_path/requirements.txt"
 chown -R "$app" "$final_path"
 
 #run source in a 'sub shell'
 (
-  set +o nounset
-  source "${final_path}/venv/bin/activate"
-  set -o nounset
-  ynh_exec_as $app $final_path/venv/bin/pip install --upgrade pip
-  ynh_exec_as $app $final_path/venv/bin/pip install --upgrade setuptools wheel psycopg2-binary
-  ynh_exec_as $app $final_path/venv/bin/pip install --upgrade django_ynh=="$django_ynh_version"
-	ynh_exec_as $app $final_path/venv/bin/pip install --upgrade ${pypi_extras}
+	set +o nounset
+	source "${final_path}/venv/bin/activate"
+	set -o nounset
+	ynh_exec_as $app $final_path/venv/bin/pip install --upgrade pip
+	ynh_exec_as $app $final_path/venv/bin/pip install -r "$final_path/requirements.txt"
 )
 
 #=================================================