diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh
index 079fbe18de3..859b03d8ef6 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh
index ca8cdfe9cfd..b64148fcd05 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh
index 4905e52b270..4fe0637c3cc 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh
index b9ed67b9749..af57f6e1e50 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh
index e691d7ae70b..59f1799c45a 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh
index 9a1b4b4cd03..fb1aae7056e 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc