diff --git a/services/mediacodec/seccomp_policy/mediacodec-arm.policy b/services/mediacodec/seccomp_policy/mediacodec-arm.policy
index 56d7f27..3870a11 100644
--- a/services/mediacodec/seccomp_policy/mediacodec-arm.policy
+++ b/services/mediacodec/seccomp_policy/mediacodec-arm.policy
@@ -14,6 +14,7 @@
 mmap2: 1
 getrandom: 1
 memfd_create: 1
+ftruncate: 1
 ftruncate64: 1
 
 # mremap: Ensure |flags| are (MREMAP_MAYMOVE | MREMAP_FIXED) TODO: Once minijail
diff --git a/services/mediacodec/seccomp_policy/mediacodec-x86.policy b/services/mediacodec/seccomp_policy/mediacodec-x86.policy
index 821e69f..b4f5ee9 100644
--- a/services/mediacodec/seccomp_policy/mediacodec-x86.policy
+++ b/services/mediacodec/seccomp_policy/mediacodec-x86.policy
@@ -50,6 +50,9 @@
 nanosleep: 1
 sched_setscheduler: 1
 uname: 1
+memfd_create: 1
+ftruncate: 1
+ftruncate64: 1
 
 # Required by AddressSanitizer
 gettid: 1