diff --git a/pkgs/development/interpreters/ruby/patchsets.nix b/pkgs/development/interpreters/ruby/patchsets.nix
index 286301dc0a5d..1d0405312130 100644
--- a/pkgs/development/interpreters/ruby/patchsets.nix
+++ b/pkgs/development/interpreters/ruby/patchsets.nix
@@ -3,6 +3,7 @@
 rec {
   "1.9.3" = [
     ./ssl_v3.patch
+    ./rand-egd.patch
     ./ruby19-parallel-install.patch
     ./bitperfect-rdoc.patch
   ] ++ ops useRailsExpress [
@@ -28,6 +29,7 @@ rec {
   ];
   "2.0.0" = [
     ./ssl_v3.patch
+    ./rand-egd.patch
   ] ++ ops useRailsExpress [
     "${patchSet}/patches/ruby/2.0.0/p${patchLevel}/railsexpress/01-zero-broken-tests.patch"
     "${patchSet}/patches/ruby/2.0.0/p${patchLevel}/railsexpress/02-railsexpress-gc.patch"
@@ -81,6 +83,7 @@ rec {
   ];
   "2.1.3" = [
     ./ssl_v3.patch
+    ./rand-egd.patch
   ] ++ ops useRailsExpress [
     "${patchSet}/patches/ruby/2.1.3/railsexpress/01-zero-broken-tests.patch"
     "${patchSet}/patches/ruby/2.1.3/railsexpress/02-improve-gc-stats.patch"
@@ -106,6 +109,7 @@ rec {
   ];
   "2.1.7" = [
     ./ssl_v3.patch
+    ./rand-egd.patch
   ] ++ ops useRailsExpress [
     "${patchSet}/patches/ruby/2.1.7/railsexpress/01-zero-broken-tests.patch"
     "${patchSet}/patches/ruby/2.1.7/railsexpress/02-improve-gc-stats.patch"
@@ -128,6 +132,7 @@ rec {
   ];
   "2.2.2" = [
     ./ssl_v3.patch
+    ./ruby22-rand-egd.patch
   ] ++ ops useRailsExpress [
     "${patchSet}/patches/ruby/2.2.2/railsexpress/01-zero-broken-tests.patch"
     "${patchSet}/patches/ruby/2.2.2/railsexpress/02-improve-gc-stats.patch"
@@ -136,6 +141,7 @@ rec {
   ];
   "2.2.3" = [
     ./ssl_v3.patch
+    ./ruby22-rand-egd.patch
   ] ++ ops useRailsExpress [
     "${patchSet}/patches/ruby/2.2.3/railsexpress/01-zero-broken-tests.patch"
     "${patchSet}/patches/ruby/2.2.3/railsexpress/02-improve-gc-stats.patch"
diff --git a/pkgs/development/interpreters/ruby/rand-egd.patch b/pkgs/development/interpreters/ruby/rand-egd.patch
new file mode 100644
index 000000000000..e4f6452000c2
--- /dev/null
+++ b/pkgs/development/interpreters/ruby/rand-egd.patch
@@ -0,0 +1,42 @@
+diff --git a/ext/openssl/extconf.rb b/ext/openssl/extconf.rb
+index e272cba..3a1fa71 100644
+--- a/ext/openssl/extconf.rb
++++ b/ext/openssl/extconf.rb
+@@ -87,6 +87,7 @@
+ have_func("PEM_def_callback")
+ have_func("PKCS5_PBKDF2_HMAC")
+ have_func("PKCS5_PBKDF2_HMAC_SHA1")
++have_func("RAND_egd")
+ have_func("X509V3_set_nconf")
+ have_func("X509V3_EXT_nconf_nid")
+ have_func("X509_CRL_add0_revoked")
+diff --git a/ext/openssl/ossl_rand.c b/ext/openssl/ossl_rand.c
+index 29cbf8c..27466fe 100644
+--- a/ext/openssl/ossl_rand.c
++++ b/ext/openssl/ossl_rand.c
+@@ -148,6 +148,7 @@ ossl_rand_pseudo_bytes(VALUE self, VALUE len)
+     return str;
+ }
+ 
++#ifdef HAVE_RAND_EGD
+ /*
+  *  call-seq:
+  *     egd(filename) -> true
+@@ -186,6 +187,7 @@ ossl_rand_egd_bytes(VALUE self, VALUE filename, VALUE len)
+     }
+     return Qtrue;
+ }
++#endif /* HAVE_RAND_EGD */
+ 
+ /*
+  *  call-seq:
+@@ -219,7 +221,9 @@ Init_ossl_rand(void)
+     DEFMETH(mRandom, "write_random_file", ossl_rand_write_file, 1);
+     DEFMETH(mRandom, "random_bytes", ossl_rand_bytes, 1);
+     DEFMETH(mRandom, "pseudo_bytes", ossl_rand_pseudo_bytes, 1);
++#ifdef HAVE_RAND_EGD
+     DEFMETH(mRandom, "egd", ossl_rand_egd, 1);
+     DEFMETH(mRandom, "egd_bytes", ossl_rand_egd_bytes, 2);
++#endif /* HAVE_RAND_EGD */
+     DEFMETH(mRandom, "status?", ossl_rand_status, 0)
+ }
diff --git a/pkgs/development/interpreters/ruby/ruby22-rand-egd.patch b/pkgs/development/interpreters/ruby/ruby22-rand-egd.patch
new file mode 100644
index 000000000000..ebf2bf56fcfa
--- /dev/null
+++ b/pkgs/development/interpreters/ruby/ruby22-rand-egd.patch
@@ -0,0 +1,42 @@
+diff --git a/ext/openssl/extconf.rb b/ext/openssl/extconf.rb
+index e272cba..3a1fa71 100644
+--- a/ext/openssl/extconf.rb
++++ b/ext/openssl/extconf.rb
+@@ -87,6 +87,7 @@
+ have_func("PEM_def_callback")
+ have_func("PKCS5_PBKDF2_HMAC")
+ have_func("PKCS5_PBKDF2_HMAC_SHA1")
++have_func("RAND_egd")
+ have_func("X509V3_set_nconf")
+ have_func("X509V3_EXT_nconf_nid")
+ have_func("X509_CRL_add0_revoked")
+diff --git a/ext/openssl/ossl_rand.c b/ext/openssl/ossl_rand.c
+index 29cbf8c..27466fe 100644
+--- a/ext/openssl/ossl_rand.c
++++ b/ext/openssl/ossl_rand.c
+@@ -148,6 +148,7 @@ ossl_rand_pseudo_bytes(VALUE self, VALUE len)
+     return str;
+ }
+ 
++#ifdef HAVE_RAND_EGD
+ /*
+  *  call-seq:
+  *     egd(filename) -> true
+@@ -186,6 +187,7 @@ ossl_rand_egd_bytes(VALUE self, VALUE filename, VALUE len)
+     }
+     return Qtrue;
+ }
++#endif /* HAVE_RAND_EGD */
+ 
+ /*
+  *  call-seq:
+@@ -219,8 +221,10 @@ Init_ossl_rand(void)
+     rb_define_module_function(mRandom, "write_random_file", ossl_rand_write_file, 1);
+     rb_define_module_function(mRandom, "random_bytes", ossl_rand_bytes, 1);
+     rb_define_module_function(mRandom, "pseudo_bytes", ossl_rand_pseudo_bytes, 1);
++#ifdef HAVE_RAND_EGD
+     rb_define_module_function(mRandom, "egd", ossl_rand_egd, 1);
+     rb_define_module_function(mRandom, "egd_bytes", ossl_rand_egd_bytes, 2);
++#endif /* HAVE_RAND_EGD */
+     rb_define_module_function(mRandom, "status?", ossl_rand_status, 0);
+ }