diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1381ee9ecac..0cf0991f70b 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -15134,7 +15134,11 @@ in
   postgresql_jdbc = callPackage ../development/java-modules/postgresql_jdbc { };
 
   prom2json = callPackage ../servers/monitoring/prometheus/prom2json.nix { };
-  prometheus = callPackage ../servers/monitoring/prometheus { };
+  prometheus = callPackage ../servers/monitoring/prometheus {
+    # Version 2.12.0 fails to build with go 1.13 due to an incorrect module file
+    # compilation error :go: cloud.google.com/go@v0.44.1: Get https://proxy.golang.org/cloud.google.com/go/@v/v0.44.1.mod: dial tcp: lookup proxy.golang.org on [::1]:53: read udp [::1]:58980->[::1]:53: read: connection refused
+    buildGoPackage = buildGo112Package;
+  };
   prometheus-alertmanager = callPackage ../servers/monitoring/prometheus/alertmanager.nix { };
   prometheus-apcupsd-exporter = callPackage ../servers/monitoring/prometheus/apcupsd-exporter.nix { };
   prometheus-aws-s3-exporter = callPackage ../servers/monitoring/prometheus/aws-s3-exporter.nix { };
@@ -15166,7 +15170,11 @@ in
   prometheus-statsd-exporter = callPackage ../servers/monitoring/prometheus/statsd-exporter.nix { };
   prometheus-surfboard-exporter = callPackage ../servers/monitoring/prometheus/surfboard-exporter.nix { };
   prometheus-unifi-exporter = callPackage ../servers/monitoring/prometheus/unifi-exporter { };
-  prometheus-varnish-exporter = callPackage ../servers/monitoring/prometheus/varnish-exporter.nix { };
+  prometheus-varnish-exporter = callPackage ../servers/monitoring/prometheus/varnish-exporter.nix {
+    # Version 1.5.1 fails to build with go 1.13 due to test failure
+    #  FAIL       github.com/jonnenauha/prometheus_varnish_exporter       0.041s
+    buildGoModule = buildGo112Module;
+  };
   prometheus-jmx-httpserver = callPackage ../servers/monitoring/prometheus/jmx-httpserver.nix {  };
   prometheus-wireguard-exporter = callPackage ../servers/monitoring/prometheus/wireguard-exporter.nix {
     inherit (darwin.apple_sdk.frameworks) Security;