diff --git a/benchmarks/spack/isambard-macs/compilers.yaml b/benchmarks/spack/isambard-macs/compilers.yaml
index c6725256..79c272cd 100644
--- a/benchmarks/spack/isambard-macs/compilers.yaml
+++ b/benchmarks/spack/isambard-macs/compilers.yaml
@@ -57,6 +57,34 @@ compilers:
     - gcc/9.2.0
     environment: {}
     extra_rpaths: []
+- compiler:
+    spec: intel@19.0.5.281
+    paths:
+      cc: /cm/shared/apps/intel/compilers_and_libraries/2019.5.281/linux/bin/intel64/icc
+      cxx: /cm/shared/apps/intel/compilers_and_libraries/2019.5.281/linux/bin/intel64/icpc
+      f77: /cm/shared/apps/intel/compilers_and_libraries/2019.5.281/linux/bin/intel64/ifort
+      fc: /cm/shared/apps/intel/compilers_and_libraries/2019.5.281/linux/bin/intel64/ifort
+    flags: {}
+    operating_system: rhel8
+    target: x86_64
+    modules:
+    - intel/compiler/64/2019/19.0.5
+    environment: {}
+    extra_rpaths: []
+- compiler:
+    spec: intel@19.1.3.304
+    paths:
+      cc: /cm/shared/apps/intel/compilers_and_libraries/2020.4.304/linux/bin/intel64/icc
+      cxx: /cm/shared/apps/intel/compilers_and_libraries/2020.4.304/linux/bin/intel64/icpc
+      f77: /cm/shared/apps/intel/compilers_and_libraries/2020.4.304/linux/bin/intel64/ifort
+      fc: /cm/shared/apps/intel/compilers_and_libraries/2020.4.304/linux/bin/intel64/ifort
+    flags: {}
+    operating_system: rhel8
+    target: x86_64
+    modules:
+    - intel/compiler/64/2020/19.1.3
+    environment: {}
+    extra_rpaths: []
 - compiler:
     spec: pgi@64
     paths: