diff --git a/src/contacts/requirements.in b/src/contacts/requirements.in
index 6207136..ffb2a54 100644
--- a/src/contacts/requirements.in
+++ b/src/contacts/requirements.in
@@ -18,7 +18,7 @@ MarkupSafe==1.1.1
 more-itertools==8.4.0
 packaging==21.2
 pluggy==0.13.1
-protobuf==3.19.1
+protobuf==3.19.5
 py==1.10.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
diff --git a/src/contacts/requirements.txt b/src/contacts/requirements.txt
index 4af21a0..74bc0e4 100644
--- a/src/contacts/requirements.txt
+++ b/src/contacts/requirements.txt
@@ -126,7 +126,7 @@ pluggy==0.13.1
     # via
     #   -r requirements.in
     #   pytest
-protobuf==3.19.1
+protobuf==3.19.5
     # via
     #   -r requirements.in
     #   googleapis-common-protos