diff --git a/build.go b/build.go
index d3f19d82..990fbb4b 100644
--- a/build.go
+++ b/build.go
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !openssl_static
 // +build !openssl_static
 
 package openssl
diff --git a/build_static.go b/build_static.go
index 69fad0a4..dde54461 100644
--- a/build_static.go
+++ b/build_static.go
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build openssl_static
 // +build openssl_static
 
 package openssl
diff --git a/init_posix.go b/init_posix.go
index 605a24bc..f518d2f8 100644
--- a/init_posix.go
+++ b/init_posix.go
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build (linux || darwin || solaris || freebsd || openbsd) && !windows
 // +build linux darwin solaris freebsd openbsd
 // +build !windows
 
diff --git a/init_windows.go b/init_windows.go
index 051133c3..7356b6e2 100644
--- a/init_windows.go
+++ b/init_windows.go
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build windows
 // +build windows
 
 package openssl