diff --git a/cmd/gorelease/gorelease.go b/cmd/gorelease/gorelease.go
index 124ad0d..edf3ed9 100644
--- a/cmd/gorelease/gorelease.go
+++ b/cmd/gorelease/gorelease.go
@@ -411,13 +411,6 @@
 		m.highestTransitiveVersion = highestVersion
 	}
 
-	// Calculate the existing versions.
-	ev, err := existingVersions(ctx, m.modPath, tmpLoadDir)
-	if err != nil {
-		return moduleInfo{}, err
-	}
-	m.existingVersions = ev
-
 	return m, nil
 }
 
@@ -521,6 +514,13 @@
 		return moduleInfo{}, err
 	}
 
+	// Calculate the existing versions.
+	ev, err := existingVersions(ctx, m.modPath, tmpLoadDir)
+	if err != nil {
+		return moduleInfo{}, err
+	}
+	m.existingVersions = ev
+
 	return m, nil
 }
 
diff --git a/cmd/gorelease/gorelease_test.go b/cmd/gorelease/gorelease_test.go
index fca52c1..10c1080 100644
--- a/cmd/gorelease/gorelease_test.go
+++ b/cmd/gorelease/gorelease_test.go
@@ -269,6 +269,7 @@
 	t.Cleanup(cleanup)
 
 	for _, test := range tests {
+		test := test
 		testName := strings.TrimSuffix(strings.TrimPrefix(filepath.ToSlash(test.testPath), "testdata/"), ".test")
 		t.Run(testName, func(t *testing.T) {
 			ctx := defaultContext
diff --git a/cmd/gorelease/report.go b/cmd/gorelease/report.go
index 0dbeca1..c2e8c8f 100644
--- a/cmd/gorelease/report.go
+++ b/cmd/gorelease/report.go
@@ -178,7 +178,7 @@
 		return
 	}
 
-	for _, v := range r.release.existingVersions {
+	for _, v := range r.base.existingVersions {
 		if semver.Compare(v, r.release.version) == 0 {
 			setNotValid("version %s already exists", v)
 		}
@@ -255,7 +255,7 @@
 	// This could happen further up, but we want the more pressing errors above
 	// to take precedence.
 	var latestForBaseMajor string
-	for _, v := range r.release.existingVersions {
+	for _, v := range r.base.existingVersions {
 		if semver.Major(v) != semver.Major(r.base.version) {
 			continue
 		}
diff --git a/cmd/gorelease/testdata/README.md b/cmd/gorelease/testdata/README.md
index 9a3a234..3c4880a 100644
--- a/cmd/gorelease/testdata/README.md
+++ b/cmd/gorelease/testdata/README.md
@@ -45,6 +45,9 @@
   or diagnostics. True by default.
 * `skip`: non-empty if the test should be skipped. The value is a string passed
   to `t.Skip`.
+* `proxyVersions`: empty if the test should include all `mod/` entries in the
+  proxy, or else a comma-separated list of the modpath@version's it should
+  include.
 
 Test archives have a file named `want`, containing the expected output of the
 test. A test will fail if the actual output differs from `want`.
diff --git a/cmd/gorelease/testdata/alreadyexists/alreadyexists_suggest_minor.test b/cmd/gorelease/testdata/alreadyexists/alreadyexists_suggest_minor.test
index cb43f45..f9d8529 100644
--- a/cmd/gorelease/testdata/alreadyexists/alreadyexists_suggest_minor.test
+++ b/cmd/gorelease/testdata/alreadyexists/alreadyexists_suggest_minor.test
@@ -1,7 +1,7 @@
 mod=example.com/basic
 base=v0.0.1
 success=false
-# B() was added, so now it should suggest a new minor version. # But, there's a
+# B() was added, so now it should suggest a new minor version. But, there's a
 # later version that already exists: so it should not try to suggest anything at
 # all.
 -- want --