diff --git a/composer.lock b/composer.lock
index cd41f66..8e793ed 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
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+    "content-hash": "f25749050cb244239d3a54919c51ec1b",
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             "name": "composer/ca-bundle",
@@ -535,16 +535,16 @@
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-            "version": "1.22.0",
+            "version": "1.27.0",
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                 "url": "https://github.com/grpc/grpc-php.git",
-                "reference": "88235e786ef9b55fcb049f00c5c5202f8086a299"
+                "reference": "a461cb1a975dde305c73168aa4494b90c3801c62"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/grpc/grpc-php/zipball/88235e786ef9b55fcb049f00c5c5202f8086a299",
-                "reference": "88235e786ef9b55fcb049f00c5c5202f8086a299",
+                "url": "https://api.github.com/repos/grpc/grpc-php/zipball/a461cb1a975dde305c73168aa4494b90c3801c62",
+                "reference": "a461cb1a975dde305c73168aa4494b90c3801c62",
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             "require": {
@@ -572,7 +572,7 @@
             "keywords": [
                 "rpc"
             ],
-            "time": "2019-07-03T19:57:39+00:00"
+            "time": "2020-01-23T19:27:18+00:00"
         },
         {
             "name": "jms/metadata",