diff --git a/network/misc/protobuf/pspec.xml b/network/misc/protobuf/pspec.xml
index 59eb48ee40..f2d2baede9 100644
--- a/network/misc/protobuf/pspec.xml
+++ b/network/misc/protobuf/pspec.xml
@@ -13,7 +13,7 @@
         <IsA>library</IsA>
         <Summary>Google's data interchange format</Summary>
         <Description>Protocol Buffers are a way of encoding structured data in an efficient yet extensible format. Google uses Protocol Buffers for almost all of its internal RPC protocols and file formats.</Description>
-        <Archive sha1sum="4d3f89477b3138d329c150e23c48af76df089996" type="targz" name="protobuf-3.15.6.tar.gz">https://github.com/protocolbuffers/protobuf/archive/v3.15.6.tar.gz</Archive>
+        <Archive sha1sum="62c7649c0fa3eee52049dda39137f8fb22c27e59" type="targz" name="protobuf-3.18.1.tar.gz">https://github.com/protocolbuffers/protobuf/archive/v3.18.1.tar.gz</Archive>
         <BuildDependencies>
             <Dependency>python-wheel</Dependency>
             <Dependency>python-devel</Dependency>
@@ -77,6 +77,13 @@
     </Package>
 
     <History>
+        <Update release="11">
+            <Date>2021-10-20</Date>
+            <Version>3.18.1</Version>
+            <Comment>Version bump.</Comment>
+            <Name>Mustafa Cinasal</Name>
+            <Email>muscnsl@gmail.com</Email>
+        </Update>
         <Update release="10">
             <Date>2021-03-13</Date>
             <Version>3.15.6</Version>