diff --git a/ext/digest/MANIFEST b/ext/digest/MANIFEST
index fd26581c63..e1cd49dfa8 100644
--- a/ext/digest/MANIFEST
+++ b/ext/digest/MANIFEST
@@ -12,6 +12,8 @@ md5/extconf.rb
 md5/md5.c
 md5/md5.h
 md5/md5init.c
+md5/md5ossl.c
+md5/md5ossl.h
 md5/depend
 rmd160/MANIFEST
 rmd160/extconf.rb
@@ -19,6 +21,8 @@ rmd160/rmd160.c
 rmd160/rmd160.h
 rmd160/rmd160hl.c
 rmd160/rmd160init.c
+rmd160/rmd160ossl.c
+rmd160/rmd160ossl.h
 rmd160/depend
 sha1/MANIFEST
 sha1/extconf.rb
@@ -26,6 +30,8 @@ sha1/sha1.c
 sha1/sha1.h
 sha1/sha1hl.c
 sha1/sha1init.c
+sha1/sha1ossl.c
+sha1/sha1ossl.h
 sha1/depend
 sha2/MANIFEST
 sha2/extconf.rb
diff --git a/ext/digest/md5/MANIFEST b/ext/digest/md5/MANIFEST
index 923af92ed2..e371e075e9 100644
--- a/ext/digest/md5/MANIFEST
+++ b/ext/digest/md5/MANIFEST
@@ -2,4 +2,6 @@ extconf.rb
 md5.c
 md5.h
 md5init.c
+md5ossl.c
+md5ossl.h
 depend
diff --git a/ext/digest/rmd160/MANIFEST b/ext/digest/rmd160/MANIFEST
index 017976de0d..4579def9fe 100644
--- a/ext/digest/rmd160/MANIFEST
+++ b/ext/digest/rmd160/MANIFEST
@@ -3,4 +3,6 @@ rmd160.c
 rmd160.h
 rmd160hl.c
 rmd160init.c
+rmd160ossl.c
+rmd160ossl.h
 depend
diff --git a/ext/digest/sha1/MANIFEST b/ext/digest/sha1/MANIFEST
index 99b83addfd..7109ab90b6 100644
--- a/ext/digest/sha1/MANIFEST
+++ b/ext/digest/sha1/MANIFEST
@@ -3,4 +3,6 @@ sha1.c
 sha1.h
 sha1hl.c
 sha1init.c
+sha1ossl.c
+sha1ossl.h
 depend