diff --git a/tools/valgrind-webrtc/memcheck/suppressions.txt b/tools/valgrind-webrtc/memcheck/suppressions.txt
index eeec65a1ff..28ab2766d0 100644
--- a/tools/valgrind-webrtc/memcheck/suppressions.txt
+++ b/tools/valgrind-webrtc/memcheck/suppressions.txt
@@ -10,15 +10,6 @@
 
 # third_party libraries
 
-{
-   libnss_leak_hitting_trusty_machines
-   Memcheck:Leak
-   fun:calloc
-   obj:/usr/lib/x86_64-linux-gnu/libnss3.so
-   ...
-   fun:NSS_NoDB_Init
-   ...
-}
 {
    libc_free_hitting_gce_vms
    Memcheck:Free
@@ -64,18 +55,6 @@
    fun:_ZN9rtc6Thread3RunEv
    fun:_ZN9rtc6Thread6PreRunEPv
 }
-{
-   bug_1976_2
-   Memcheck:Leak
-   fun:calloc
-   obj:/usr/lib/x86_64-linux-gnu/libnss3.so
-   ...
-   fun:NSS_NoDB_Init
-   fun:_ZN9rtc10NSSContext13InitializeSSLEPFbPvE
-   fun:_ZN9rtc13InitializeSSLEPFbPvE
-   fun:_ZN9rtc10RandomTest13SetUpTestCaseEv
-   fun:_ZN7testing8TestCase16RunSetUpTestCaseEv
-}
 {
    bug_2100_3
    Memcheck:Uninitialized