diff --git a/pkgs/development/compilers/crystal/default.nix b/pkgs/development/compilers/crystal/default.nix
index c7a74880e44..2bc3d396da6 100644
--- a/pkgs/development/compilers/crystal/default.nix
+++ b/pkgs/development/compilers/crystal/default.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, fetchFromGitHub, fetchurl, makeWrapper
-, coreutils, git, gmp, nettools, openssl, readline, tzdata, libxml2, libyaml
+, coreutils, git, gmp, nettools, openssl_1_0_2, readline, tzdata, libxml2, libyaml
 , boehmgc, libatomic_ops, pcre, libevent, libiconv, llvm, clang, which, zlib
 , callPackage }:
 
@@ -20,7 +20,7 @@ let
 
   arch = archs."${stdenv.system}" or (throw "system ${stdenv.system} not supported");
 
-  checkInputs = [ git gmp openssl readline libxml2 libyaml ];
+  checkInputs = [ git gmp openssl_1_0_2 readline libxml2 libyaml ];
 
   genericBinary = { version, sha256s, rel ? 1 }:
   stdenv.mkDerivation rec {
@@ -73,7 +73,7 @@ let
 
     buildInputs = [
       boehmgc libatomic_ops pcre libevent libyaml
-      llvm zlib openssl
+      llvm zlib openssl_1_0_2
     ] ++ stdenv.lib.optionals stdenv.isDarwin [
       libiconv
     ];