diff --git a/datacite/schema31.py b/datacite/schema31.py
index cc5a054..acc0354 100644
--- a/datacite/schema31.py
+++ b/datacite/schema31.py
@@ -10,7 +10,8 @@
 
 """DataCite v3.1 JSON to XML transformations."""
 
-import pkg_resources
+import importlib.resources as importlib_resources
+
 from lxml import etree
 from lxml.builder import E
 
@@ -37,7 +38,7 @@
 }
 
 validator = validator_factory(
-    pkg_resources.resource_filename("datacite", "schemas/datacite-v3.1.json")
+    importlib_resources.files("datacite") / "schemas/datacite-v3.1.json"
 )
 
 
diff --git a/datacite/schema40.py b/datacite/schema40.py
index e19927b..baae170 100644
--- a/datacite/schema40.py
+++ b/datacite/schema40.py
@@ -10,7 +10,8 @@
 
 """DataCite v4.0 JSON to XML transformations."""
 
-import pkg_resources
+import importlib.resources as importlib_resources
+
 from lxml import etree
 from lxml.builder import E
 
@@ -37,7 +38,7 @@
 }
 
 validator = validator_factory(
-    pkg_resources.resource_filename("datacite", "schemas/datacite-v4.0.json")
+    importlib_resources.files("datacite") / "schemas/datacite-v4.0.json"
 )
 
 
diff --git a/datacite/schema41.py b/datacite/schema41.py
index 66fd165..6f26b59 100644
--- a/datacite/schema41.py
+++ b/datacite/schema41.py
@@ -10,7 +10,8 @@
 
 """DataCite v4.1 JSON to XML transformations."""
 
-import pkg_resources
+import importlib.resources as importlib_resources
+
 from lxml import etree
 from lxml.builder import E
 
@@ -37,7 +38,7 @@
 }
 
 validator = validator_factory(
-    pkg_resources.resource_filename("datacite", "schemas/datacite-v4.1.json")
+    importlib_resources.files("datacite") / "schemas/datacite-v4.1.json"
 )
 
 
diff --git a/datacite/schema42.py b/datacite/schema42.py
index bb57476..9a245ed 100644
--- a/datacite/schema42.py
+++ b/datacite/schema42.py
@@ -11,7 +11,8 @@
 
 """DataCite v4.2 JSON to XML transformations."""
 
-import pkg_resources
+import importlib.resources as importlib_resources
+
 from lxml import etree
 from lxml.builder import E
 
@@ -38,7 +39,7 @@
 }
 
 validator = validator_factory(
-    pkg_resources.resource_filename("datacite", "schemas/datacite-v4.2.json")
+    importlib_resources.files("datacite") / "schemas/datacite-v4.2.json"
 )
 
 
diff --git a/datacite/schema43.py b/datacite/schema43.py
index 5bef9f0..19511f8 100644
--- a/datacite/schema43.py
+++ b/datacite/schema43.py
@@ -11,7 +11,8 @@
 
 """DataCite v4.3 JSON to XML transformations."""
 
-import pkg_resources
+import importlib.resources as importlib_resources
+
 from lxml import etree
 from lxml.builder import E
 
@@ -38,7 +39,7 @@
 }
 
 validator = validator_factory(
-    pkg_resources.resource_filename("datacite", "schemas/datacite-v4.3.json")
+    importlib_resources.files("datacite") / "schemas/datacite-v4.3.json"
 )
 
 
diff --git a/setup.cfg b/setup.cfg
index eabb17b..3fbbebb 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -34,6 +34,7 @@ install_requires =
     lxml>=4.5.2
     requests>=2.12.2
     idutils>=1.0.0
+    importlib-metadata>=6.11.0
 
 [options.extras_require]
 tests =