diff --git a/llvm/test/tools/llvm-elfabi/preserve-dates-stub.test b/llvm/test/tools/llvm-elfabi/preserve-dates-stub.test
--- a/llvm/test/tools/llvm-elfabi/preserve-dates-stub.test
+++ b/llvm/test/tools/llvm-elfabi/preserve-dates-stub.test
@@ -1,9 +1,9 @@
 ## Test writing unchanged content to ELF Stub file with --write-if-changed flag.
 
 # RUN: llvm-elfabi %s --output-target=elf64-little %t
-# RUN: touch -m -t 197001010000 %t
+# RUN: env TZ=GMT touch -m -t 197001010000 %t
 # RUN: llvm-elfabi %s --output-target=elf64-little %t --write-if-changed
-# RUN: ls -l %t | FileCheck %s
+# RUN: env TZ=GMT ls -l %t | FileCheck %s
 
 --- !tapi-tbe
 TbeVersion: 1.0
diff --git a/llvm/test/tools/llvm-elfabi/preserve-dates-tbe.test b/llvm/test/tools/llvm-elfabi/preserve-dates-tbe.test
--- a/llvm/test/tools/llvm-elfabi/preserve-dates-tbe.test
+++ b/llvm/test/tools/llvm-elfabi/preserve-dates-tbe.test
@@ -1,8 +1,8 @@
 ## Test writing unchanged content to TBE file with --write-if-changed flag.
 
 # RUN: llvm-elfabi --elf %p/Inputs/gnu_hash.so --emit-tbe=%t
-# RUN: touch -m -t 197001010000 %t
+# RUN: env TZ=GMT touch -m -t 197001010000 %t
 # RUN: llvm-elfabi --elf %p/Inputs/gnu_hash.so --emit-tbe=%t --write-if-changed
-# RUN: ls -l %t | FileCheck %s
+# RUN: env TZ=GMT ls -l %t | FileCheck %s
 
 # CHECK: {{[[:space:]]1970}}