diff --git a/bazel/repositories.bzl b/bazel/repositories.bzl
index 0fe8e252..fe6ca7fe 100644
--- a/bazel/repositories.bzl
+++ b/bazel/repositories.bzl
@@ -48,11 +48,11 @@ def prometheus_cpp_repositories():
     maybe(
         http_archive,
         name = "net_zlib_zlib",
-        sha256 = "c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1",
-        strip_prefix = "zlib-1.2.11",
+        sha256 = "9a93b2b7dfdac77ceba5a558a580e74667dd6fede4585b91eefb60f03b72df23",
+        strip_prefix = "zlib-1.3.1",
         urls = [
-            "https://mirror.bazel.build/zlib.net/zlib-1.2.11.tar.gz",
-            "https://zlib.net/zlib-1.2.11.tar.gz",
+            "https://mirror.bazel.build/zlib.net/zlib-1.3.1.tar.gz",
+            "https://zlib.net/zlib-1.3.1.tar.gz",
         ],
         build_file = "@com_github_jupp0r_prometheus_cpp//bazel:zlib.BUILD",
     )
diff --git a/bazel/zlib.BUILD b/bazel/zlib.BUILD
index 34cd232c..e9215478 100644
--- a/bazel/zlib.BUILD
+++ b/bazel/zlib.BUILD
@@ -10,6 +10,7 @@ cc_library(
     copts = [
         "-w",
         "-Dverbose=-1",
+        "-Wno-error=implicit-function-declaration",
     ],
     includes = ["."],
     visibility = ["//visibility:public"],