diff --git a/CHANGELOG.md b/CHANGELOG.md
index 542d5c085..4da1eb452 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,8 +11,12 @@ Enhancements:
 Bugfixes:
 * [#1011][]: JSON: Fix inaccurate precision when encoding complex64.
 
+Other changes:
+* [#1028][]: Drop support for Go < 1.15.
+
 [#1011]: https://github.com/uber-go/zap/pull/1011
 [#989]: https://github.com/uber-go/zap/pull/989
+[#1028]: https://github.com/uber-go/zap/pull/1028
 
 ## 1.19.1 (8 Sep 2021)
 
diff --git a/global.go b/global.go
index c1ac0507c..3cb46c9e0 100644
--- a/global.go
+++ b/global.go
@@ -31,6 +31,7 @@ import (
 )
 
 const (
+	_stdLogDefaultDepth      = 1
 	_loggerWriterDepth       = 2
 	_programmerErrorTemplate = "You've found a bug in zap! Please file a bug at " +
 		"https://github.com/uber-go/zap/issues/new and reference this error: %v"
diff --git a/global_go112.go b/global_go112.go
deleted file mode 100644
index fb11f7390..000000000
--- a/global_go112.go
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright (c) 2019 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-// See #682 for more information.
-//go:build go1.12
-// +build go1.12
-
-package zap
-
-const _stdLogDefaultDepth = 1
diff --git a/global_prego112.go b/global_prego112.go
deleted file mode 100644
index e452fd53b..000000000
--- a/global_prego112.go
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright (c) 2019 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-// See #682 for more information.
-//go:build !go1.12
-// +build !go1.12
-
-package zap
-
-const _stdLogDefaultDepth = 2