diff --git a/Dockerfile b/Dockerfile
index 6e245fd53..fad521d50 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -58,8 +58,6 @@ RUN apt-get update && \
         curl ca-certificates gnupg git runit libpq-dev \
         postgresql-client build-essential libxmlsec1-dev \
         pkg-config libmaxminddb0 && \
-    pip install lxml==4.6.4 --no-cache-dir && \
-    export C_INCLUDE_PATH=/usr/local/lib/python3.10/site-packages/lxml/includes && \
     pip install -r /requirements.txt --no-cache-dir && \
     apt-get remove --purge -y build-essential git && \
     apt-get autoremove --purge -y && \
diff --git a/Pipfile b/Pipfile
index 1bcef351e..2f787564a 100644
--- a/Pipfile
+++ b/Pipfile
@@ -32,8 +32,7 @@ geoip2 = "*"
 gunicorn = "*"
 kubernetes = "==v19.15.0"
 ldap3 = "*"
-# 4.7.0 and later remove `lxml-version.h` which is required by xmlsec
-lxml = "==4.6.5"
+lxml = "*"
 packaging = "*"
 psycopg2-binary = "*"
 pycryptodome = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index dc59c8f4b..e2f1b3a50 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "ba1371e813190a2e25b49788b7ba6071c8ef61f512043b71d343681003387b9b"
+            "sha256": "dedb51159ef09fd9b00ab28022706f525c9df057ffd646e2a552784341a10538"
         },
         "pipfile-spec": 6,
         "requires": {},
@@ -196,7 +196,7 @@
                 "sha256:1ef33f089e0a494e8d1b487508356f055c865b1955b125c00c991a4358543c80",
                 "sha256:8eca49962b1bfc09c24d442aa55688be88efe5c24aeef89d3be135614b95c678"
             ],
-            "markers": "python_version >= '3.7' and python_version < '4'",
+            "markers": "python_version >= '3.7' and python_full_version < '4.0.0'",
             "version": "==1.9.0"
         },
         "cbor2": {
@@ -325,7 +325,7 @@
                 "sha256:a0713dc7a1de3f06bc0df5a9567ad19ead2d3d5689b434768a6145bff77c0667",
                 "sha256:f184f0d851d96b6d29297354ed981b7dd71df7ff500d82fa6d11f0856bee8035"
             ],
-            "markers": "python_version < '4' and python_full_version >= '3.6.2'",
+            "markers": "python_full_version >= '3.6.2' and python_full_version < '4.0.0'",
             "version": "==0.3.0"
         },
         "click-plugins": {
@@ -1455,9 +1455,7 @@
             "version": "==4.1.1"
         },
         "urllib3": {
-            "extras": [
-                "secure"
-            ],
+            "extras": [],
             "hashes": [
                 "sha256:4987c65554f7a2dbf30c18fd48778ef124af6fab771a377103da0585e2336ece",
                 "sha256:c4fdf4019605b6e5423637e01bc9fe4daef873709a7973e195ceba0a62bbc844"
@@ -2418,9 +2416,7 @@
             "version": "==4.0.1"
         },
         "urllib3": {
-            "extras": [
-                "secure"
-            ],
+            "extras": [],
             "hashes": [
                 "sha256:4987c65554f7a2dbf30c18fd48778ef124af6fab771a377103da0585e2336ece",
                 "sha256:c4fdf4019605b6e5423637e01bc9fe4daef873709a7973e195ceba0a62bbc844"