diff --git a/gopls/internal/lsp/safetoken/safetoken_test.go b/gopls/internal/lsp/safetoken/safetoken_test.go
index 8f0a30a9dd7..83a50fbec10 100644
--- a/gopls/internal/lsp/safetoken/safetoken_test.go
+++ b/gopls/internal/lsp/safetoken/safetoken_test.go
@@ -81,6 +81,7 @@ func TestGoplsSourceDoesNotCallTokenFileMethods(t *testing.T) {
 	cfg.Env = os.Environ()
 	cfg.Env = append(cfg.Env,
 		"GOPACKAGESDRIVER=off",
+		"GOWORK=off", // necessary for -mod=mod below
 		"GOFLAGS=-mod=mod",
 	)
 
diff --git a/gopls/test/debug/debug_test.go b/gopls/test/debug/debug_test.go
index 5ea07fbde38..757dd2f1c70 100644
--- a/gopls/test/debug/debug_test.go
+++ b/gopls/test/debug/debug_test.go
@@ -54,6 +54,7 @@ func TestTemplates(t *testing.T) {
 	cfg.Env = os.Environ()
 	cfg.Env = append(cfg.Env,
 		"GOPACKAGESDRIVER=off",
+		"GOWORK=off", // necessary for -mod=mod below
 		"GOFLAGS=-mod=mod",
 	)