diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4a1de02ec8..ba6a8c1660 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -406,7 +406,7 @@ jobs:
       - name: Set up CBMC runner
         uses: FreeRTOS/CI-CD-Github-Actions/set_up_cbmc_runner@main
         with:
-          cbmc_version: "5.61.0"
+          cbmc_version: "5.95.1"
 
       - env:
           stepName: Install Dependencies
diff --git a/test/cbmc/proofs/Socket/lTCPAddRxdata/TCPAddRxdata_harness.c b/test/cbmc/proofs/Socket/lTCPAddRxdata/TCPAddRxdata_harness.c
index fb73ca397d..6e0b9278a2 100644
--- a/test/cbmc/proofs/Socket/lTCPAddRxdata/TCPAddRxdata_harness.c
+++ b/test/cbmc/proofs/Socket/lTCPAddRxdata/TCPAddRxdata_harness.c
@@ -36,7 +36,7 @@ void * pvPortMallocLarge( size_t xWantedSize )
 
 void harness()
 {
-    FreeRTOS_Socket_t * pxSocket = ensure_FreeRTOS_Socket_t_is_allocated( sizeof( FreeRTOS_Socket_t ) );
+    FreeRTOS_Socket_t * pxSocket = ensure_FreeRTOS_Socket_t_is_allocated();
     size_t uxOffset;
     const uint8_t * pcData;
     uint32_t ulByteCount;