diff --git a/clang/test/Analysis/scan-build/exclude_directories.test b/clang/test/Analysis/scan-build/exclude_directories.test
index 2c79ed842af113..c161e51b6d26c5 100644
--- a/clang/test/Analysis/scan-build/exclude_directories.test
+++ b/clang/test/Analysis/scan-build/exclude_directories.test
@@ -1,3 +1,6 @@
+// FIXME: Actually, "perl".
+REQUIRES: shell
+
 RUN: rm -rf %t.output_dir && mkdir %t.output_dir
 RUN: %scan-build -o %t.output_dir %clang -S \
 RUN:     %S/Inputs/multidirectory_project/directory1/file1.c \
diff --git a/clang/test/Analysis/scan-build/help.test b/clang/test/Analysis/scan-build/help.test
index d1f17cd69f51d1..61915d32609439 100644
--- a/clang/test/Analysis/scan-build/help.test
+++ b/clang/test/Analysis/scan-build/help.test
@@ -1,3 +1,6 @@
+// FIXME: Actually, "perl".
+REQUIRES: shell
+
 RUN: %scan-build -h | FileCheck %s
 RUN: %scan-build --help | FileCheck %s
 
diff --git a/clang/test/Analysis/scan-build/html_output.test b/clang/test/Analysis/scan-build/html_output.test
index 2eca2c013a55c1..eed2051d4df627 100644
--- a/clang/test/Analysis/scan-build/html_output.test
+++ b/clang/test/Analysis/scan-build/html_output.test
@@ -1,3 +1,6 @@
+// FIXME: Actually, "perl".
+REQUIRES: shell
+
 RUN: rm -rf %t.output_dir && mkdir %t.output_dir
 RUN: %scan-build -o %t.output_dir %clang -S %S/Inputs/single_null_dereference.c \
 RUN:     | FileCheck %s -check-prefix CHECK-STDOUT
diff --git a/clang/test/Analysis/scan-build/plist_html_output.test b/clang/test/Analysis/scan-build/plist_html_output.test
index b995aa6d5d36ac..c07891e35fbf33 100644
--- a/clang/test/Analysis/scan-build/plist_html_output.test
+++ b/clang/test/Analysis/scan-build/plist_html_output.test
@@ -1,3 +1,6 @@
+// FIXME: Actually, "perl".
+REQUIRES: shell
+
 RUN: rm -rf %t.output_dir && mkdir %t.output_dir
 RUN: %scan-build -plist-html -o %t.output_dir %clang -S %S/Inputs/single_null_dereference.c \
 RUN:     | FileCheck %s -check-prefix CHECK-STDOUT
diff --git a/clang/test/Analysis/scan-build/plist_output.test b/clang/test/Analysis/scan-build/plist_output.test
index 1e7bef1035b51c..0112e84630eda2 100644
--- a/clang/test/Analysis/scan-build/plist_output.test
+++ b/clang/test/Analysis/scan-build/plist_output.test
@@ -1,3 +1,6 @@
+// FIXME: Actually, "perl".
+REQUIRES: shell
+
 RUN: rm -rf %t.output_dir && mkdir %t.output_dir
 RUN: %scan-build -plist -o %t.output_dir %clang -S %S/Inputs/single_null_dereference.c \
 RUN:     | FileCheck %s -check-prefix CHECK-STDOUT