diff --git a/Pipfile b/Pipfile
index 8dfd30d7..18e079ac 100644
--- a/Pipfile
+++ b/Pipfile
@@ -5,7 +5,7 @@ name = "pypi"
 
 [packages]
 cel-python = "==0.1.*"
-protobuf = "==4.*"
+protobuf = "==5.*"
 
 [dev-packages]
 pytest = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index b5089ed2..0eb09785 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "d316957dd53c7a49db44809d8a0f43b2947c356d884df55268092dc089e07b82"
+            "sha256": "853853ff829ce396202f1c2866f5ceb8b4a918e9fec02f3fe44db96e452fb0b5"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -162,21 +162,21 @@
         },
         "protobuf": {
             "hashes": [
-                "sha256:19b270aeaa0099f16d3ca02628546b8baefe2955bbe23224aaf856134eccf1e4",
-                "sha256:209ba4cc916bab46f64e56b85b090607a676f66b473e6b762e6f1d9d591eb2e8",
-                "sha256:25b5d0b42fd000320bd7830b349e3b696435f3b329810427a6bcce6a5492cc5c",
-                "sha256:7c8daa26095f82482307bc717364e7c13f4f1c99659be82890dcfc215194554d",
-                "sha256:c053062984e61144385022e53678fbded7aea14ebb3e0305ae3592fb219ccfa4",
-                "sha256:d4198877797a83cbfe9bffa3803602bbe1625dc30d8a097365dbc762e5790faa",
-                "sha256:e3c97a1555fd6388f857770ff8b9703083de6bf1f9274a002a332d65fbb56c8c",
-                "sha256:e7cb0ae90dd83727f0c0718634ed56837bfeeee29a5f82a7514c03ee1364c019",
-                "sha256:f0700d54bcf45424477e46a9f0944155b46fb0639d69728739c0e47bab83f2b9",
-                "sha256:f1279ab38ecbfae7e456a108c5c0681e4956d5b1090027c1de0f934dfdb4b35c",
-                "sha256:f4f118245c4a087776e0a8408be33cf09f6c547442c00395fbfb116fac2f8ac2"
+                "sha256:25236b69ab4ce1bec413fd4b68a15ef8141794427e0b4dc173e9d5d9dffc3bcd",
+                "sha256:39309898b912ca6febb0084ea912e976482834f401be35840a008da12d189340",
+                "sha256:3adc15ec0ff35c5b2d0992f9345b04a540c1e73bfee3ff1643db43cc1d734333",
+                "sha256:4ac7249a1530a2ed50e24201d6630125ced04b30619262f06224616e0030b6cf",
+                "sha256:4e38fc29d7df32e01a41cf118b5a968b1efd46b9c41ff515234e794011c78b17",
+                "sha256:7a97b9c5aed86b9ca289eb5148df6c208ab5bb6906930590961e08f097258107",
+                "sha256:917ed03c3eb8a2d51c3496359f5b53b4e4b7e40edfbdd3d3f34336e0eef6825a",
+                "sha256:df5e5b8e39b7d1c25b186ffdf9f44f40f810bbcc9d2b71d9d3156fee5a9adf15",
+                "sha256:dfddb7537f789002cc4eb00752c92e67885badcc7005566f2c5de9d969d3282d",
+                "sha256:ee52874a9e69a30271649be88ecbe69d374232e8fd0b4e4b0aaaa87f429f1631",
+                "sha256:f6abd0f69968792da7460d3c2cfa7d94fd74e1c21df321eb6345b963f9ec3d8d"
             ],
             "index": "pypi",
             "markers": "python_version >= '3.8'",
-            "version": "==4.25.3"
+            "version": "==5.27.1"
         },
         "python-dateutil": {
             "hashes": [