diff --git a/pyproject.toml b/pyproject.toml
index d6a098ff..98eab11f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ dependencies = [
     "kafka-python>=1.4.4",
     "lxml>=4.4.0",
     "mailsuite>=1.6.1",
-    "msgraph-core>=0.2.2",
+    "msgraph-core<1.0.0,>=0.2.2",
     "publicsuffixlist>=0.10.0",
     "requests>=2.22.0",
     "tqdm>=4.31.1",
diff --git a/requirements.txt b/requirements.txt
index 30dfa3f1..128feda0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ sphinx_rtd_theme>=0.4.3
 codecov>=2.0.15
 lxml>=4.4.0
 boto3>=1.16.63
-msgraph-core>=0.2.2
+msgraph-core<1.0.0,>=0.2.2
 azure-identity>=1.8.0
 azure-monitor-ingestion>=1.0.0
 google-api-core>=2.4.0