diff --git a/hack/base.mk b/hack/base.mk
index fd829b8..55d7269 100644
--- a/hack/base.mk
+++ b/hack/base.mk
@@ -1,7 +1,7 @@
 # renovate: datasource=github-tags depName=golangci/golangci-lint
 GOLANGCI_VERSION ?= v2.7.2
 # renovate: datasource=github-tags depName=protocolbuffers/protobuf
-PROTOC_VERSION ?= v33.2
+PROTOC_VERSION ?= v33.4
 TOOLS_BIN := $(shell mkdir -p build/tools && realpath build/tools)
 
 ifneq ($(shell git status --porcelain --untracked-files=no),)