diff --git a/dashboard/builders.go b/dashboard/builders.go
index f5f3edb2e5..83f8466d0e 100644
--- a/dashboard/builders.go
+++ b/dashboard/builders.go
@@ -502,6 +502,30 @@ var Hosts = map[string]*HostConfig{
 		Notes:       "OpenBSD 7.2; GCE VM, built from build/env/openbsd-amd64",
 		SSHUsername: "gopher",
 	},
+	"host-openbsd-386-73": {
+		VMImage:     "openbsd-386-73",
+		machineType: "n2", // force Intel; see go.dev/issue/49209
+		Notes:       "OpenBSD 7.3; GCE VM, built from build/env/openbsd-386",
+		SSHUsername: "gopher",
+	},
+	"host-openbsd-amd64-73": {
+		VMImage:     "openbsd-amd64-73",
+		machineType: "n2", // force Intel; see go.dev/issue/49209
+		Notes:       "OpenBSD 7.3; GCE VM, built from build/env/openbsd-amd64",
+		SSHUsername: "gopher",
+	},
+	"host-openbsd-386-74": {
+		VMImage:     "openbsd-386-74",
+		machineType: "n2", // force Intel; see go.dev/issue/49209
+		Notes:       "OpenBSD 7.4; GCE VM, built from build/env/openbsd-386",
+		SSHUsername: "gopher",
+	},
+	"host-openbsd-amd64-74": {
+		VMImage:     "openbsd-amd64-74",
+		machineType: "n2", // force Intel; see go.dev/issue/49209
+		Notes:       "OpenBSD 7.4; GCE VM, built from build/env/openbsd-amd64",
+		SSHUsername: "gopher",
+	},
 	"host-openbsd-arm-joelsing": {
 		IsReverse: true,
 		ExpectNum: 1,
@@ -2062,6 +2086,44 @@ func init() {
 		distTestAdjust:    noTestDirAndNoReboot,
 		numTryTestHelpers: 4,
 	})
+	addBuilder(BuildConfig{
+		Name:              "openbsd-amd64-73",
+		HostType:          "host-openbsd-amd64-73",
+		tryBot:            defaultTrySet(),
+		distTestAdjust:    noTestDirAndNoReboot,
+		numTryTestHelpers: 4,
+	})
+	addBuilder(BuildConfig{
+		Name:     "openbsd-386-73",
+		HostType: "host-openbsd-386-73",
+		tryBot:   explicitTrySet("sys"),
+		buildsRepo: func(repo, branch, goBranch string) bool {
+			// https://go.dev/issue/49529: git seems to be too slow on this
+			// platform.
+			return repo != "review" && buildRepoByDefault(repo)
+		},
+		distTestAdjust:    noTestDirAndNoReboot,
+		numTryTestHelpers: 4,
+	})
+	addBuilder(BuildConfig{
+		Name:              "openbsd-amd64-74",
+		HostType:          "host-openbsd-amd64-74",
+		tryBot:            defaultTrySet(),
+		distTestAdjust:    noTestDirAndNoReboot,
+		numTryTestHelpers: 4,
+	})
+	addBuilder(BuildConfig{
+		Name:     "openbsd-386-74",
+		HostType: "host-openbsd-386-74",
+		tryBot:   explicitTrySet("sys"),
+		buildsRepo: func(repo, branch, goBranch string) bool {
+			// https://go.dev/issue/49529: git seems to be too slow on this
+			// platform.
+			return repo != "review" && buildRepoByDefault(repo)
+		},
+		distTestAdjust:    noTestDirAndNoReboot,
+		numTryTestHelpers: 4,
+	})
 	addBuilder(BuildConfig{
 		Name:         "openbsd-arm-jsing",
 		HostType:     "host-openbsd-arm-joelsing",
diff --git a/env/openbsd-amd64/README b/env/openbsd-amd64/README
index 6520b672e7..68fd8a559d 100644
--- a/env/openbsd-amd64/README
+++ b/env/openbsd-amd64/README
@@ -3,18 +3,18 @@ OpenBSD builder, booting up to run the buildlet.
 
 make.bash should be run on a Linux box with expect and qemu.
 Debian packages: expect qemu-utils qemu-system-x86 growisofs genisoimage.
-    VERSION=7.2 ARCH=amd64 ./make.bash
+    VERSION=7.4 ARCH=amd64 ./make.bash
 
 After it completes, it creates a file openbsd-${VERSION}-${ARCH}-gce.tar.gz
 
 Then:
-    gsutil cp -a public-read openbsd-7.2-amd64-gce.tar.gz gs://go-builder-data/openbsd-amd64-72.tar.gz
+    gsutil cp -a public-read openbsd-7.4-amd64-gce.tar.gz gs://go-builder-data/openbsd-amd64-74.tar.gz
 Or just use the web UI at:
     https://console.developers.google.com/project/symbolic-datum-552/storage/browser/go-builder-data/
 
 Then:
-    gcloud compute --project symbolic-datum-552 images delete openbsd-amd64-72
-    gcloud compute --project symbolic-datum-552 images create openbsd-amd64-72 --source-uri gs://go-builder-data/openbsd-amd64-72.tar.gz
+    gcloud compute --project symbolic-datum-552 images delete openbsd-amd64-74
+    gcloud compute --project symbolic-datum-552 images create openbsd-amd64-74 --source-uri gs://go-builder-data/openbsd-amd64-74.tar.gz
 
 The VM needs to be run with the GCE metadata attribute "buildlet-binary-url" set to a URL
 of the OpenBSD buildlet (cross-compiled, typically).
diff --git a/env/openbsd-amd64/make.bash b/env/openbsd-amd64/make.bash
index 124354490d..092661e76f 100755
--- a/env/openbsd-amd64/make.bash
+++ b/env/openbsd-amd64/make.bash
@@ -7,7 +7,7 @@ set -e
 set -u
 
 # Update to the version listed on https://openbsd.org
-readonly VERSION="${VERSION:-7.2}"
+readonly VERSION="${VERSION:-7.4}"
 readonly RELNO="${VERSION/./}"
 readonly SNAPSHOT=false