diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 208d7cf..a871c59 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -897,6 +897,9 @@
 
 For Cortex-X925, the following errata build flags are defined :
 
+- ``ERRATA_X925_2963999``: This applies errata 2963999 workaround to Cortex-X925
+  CPU. This needs to be enabled for revision r0p0. It is fixed in r0p1.
+
 - ``ERRATA_X925_3701747``: This applies errata 3701747 workaround to Cortex-X925
   CPU. This needs to be enabled for revisions r0p0 and r0p1. It is still open.
 
diff --git a/lib/cpus/aarch64/cortex_x925.S b/lib/cpus/aarch64/cortex_x925.S
index e2e70dd..5974c18 100644
--- a/lib/cpus/aarch64/cortex_x925.S
+++ b/lib/cpus/aarch64/cortex_x925.S
@@ -27,6 +27,21 @@
 
 check_erratum_ls cortex_x925, ERRATUM(3701747), CPU_REV(0, 1)
 
+workaround_reset_start cortex_x925, ERRATUM(2963999), ERRATA_X925_2963999
+	/* Add ISB before MRS reads of MPIDR_EL1/MIDR_EL1 */
+	ldr x0, =0x0
+	msr S3_6_c15_c8_0, x0 	/* msr CPUPSELR_EL3, X0 */
+	ldr x0, =0xd5380000
+	msr S3_6_c15_c8_2, x0 	/* msr CPUPOR_EL3, X0 */
+	ldr x0, =0xFFFFFF40
+	msr S3_6_c15_c8_3,x0 	/* msr CPUPMR_EL3, X0 */
+	ldr x0, =0x000080010033f
+	msr S3_6_c15_c8_1, x0	/* msr CPUPCR_EL3, X0 */
+	isb
+workaround_reset_end cortex_x925, ERRATUM(2963999)
+
+check_erratum_ls cortex_x925, ERRATUM(2963999), CPU_REV(0, 0)
+
 /* Disable hardware page aggregation. Enables mitigation for `CVE-2024-5660` */
 workaround_reset_start cortex_x925, CVE(2024, 5660), WORKAROUND_CVE_2024_5660
 	sysreg_bit_set CORTEX_X925_CPUECTLR_EL1, BIT(46)
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 3ee5074..8136624 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -904,6 +904,10 @@
 # of the Cortex-X4 cpu and is still open.
 CPU_FLAG_LIST += ERRATA_X4_3701758
 
+# Flag to apply erratum 2963999 workaround during reset. This erratum applies
+# to revisions r0p0 of the Cortex-X925 cpu and is fixed in r0p1.
+CPU_FLAG_LIST += ERRATA_X925_2963999
+
 # Flag to apply erratum 3701747 workaround during context save/restore of
 # ICH_VMCR_EL2 reg. This erratum applies to revisions r0p0, r0p1 of the
 # Cortex-X925 cpu and is still open.