diff --git a/crypto/nss_util.cc b/crypto/nss_util.cc
index a0e7f61fab0c..fac728a729fb 100644
--- a/crypto/nss_util.cc
+++ b/crypto/nss_util.cc
@@ -623,13 +623,16 @@ class NSSInitSingleton {
 
     EnsureNSPRInit();
 
-    // We *must* have NSS >= 3.26 at compile time.
-    static_assert((NSS_VMAJOR == 3 && NSS_VMINOR >= 26) || (NSS_VMAJOR > 3),
-                  "nss version check failed");
+    // We *must* have NSS >= 3.14.3.
+    static_assert(
+        (NSS_VMAJOR == 3 && NSS_VMINOR == 14 && NSS_VPATCH >= 3) ||
+        (NSS_VMAJOR == 3 && NSS_VMINOR > 14) ||
+        (NSS_VMAJOR > 3),
+        "nss version check failed");
     // Also check the run-time NSS version.
     // NSS_VersionCheck is a >= check, not strict equality.
-    if (!NSS_VersionCheck("3.26")) {
-      LOG(FATAL) << "NSS_VersionCheck(\"3.26\") failed. NSS >= 3.26 is "
+    if (!NSS_VersionCheck("3.14.3")) {
+      LOG(FATAL) << "NSS_VersionCheck(\"3.14.3\") failed. NSS >= 3.14.3 is "
                     "required. Please upgrade to the latest NSS, and if you "
                     "still get this error, contact your distribution "
                     "maintainer.";
diff --git a/crypto/scoped_test_nss_db.cc b/crypto/scoped_test_nss_db.cc
index 03470c130371..b334109e0342 100644
--- a/crypto/scoped_test_nss_db.cc
+++ b/crypto/scoped_test_nss_db.cc
@@ -44,6 +44,15 @@ ScopedTestNSSDB::~ScopedTestNSSDB() {
     CERT_DestroyCertList(cert_list);
   }
 
+  // Don't close when NSS is < 3.15.1, because it would require an additional
+  // sleep for 1 second after closing the database, due to
+  // http://bugzil.la/875601.
+  if (!NSS_VersionCheck("3.15.1")) {
+    LOG(ERROR) << "NSS version is < 3.15.1, test DB will not be closed.";
+    temp_dir_.Take();
+    return;
+  }
+
   // NSS is allowed to do IO on the current thread since dispatching
   // to a dedicated thread would still have the affect of blocking
   // the current thread, due to NSS's internal locking requirements