diff --git a/docs/ideal_integration.md b/docs/ideal_integration.md
index d53c469cb..912906996 100644
--- a/docs/ideal_integration.md
+++ b/docs/ideal_integration.md
@@ -36,7 +36,7 @@ Examples:
 [FreeType](http://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/src/tools/ftfuzzer),
 [re2](https://github.com/google/re2/tree/master/re2/fuzzing),
 [harfbuzz](https://github.com/behdad/harfbuzz/tree/master/test/fuzzing),
-[pcre2](http://vcs.pcre.org/pcre2/code/trunk/src/pcre2_fuzzsupport.c?view=markup),
+[pcre2](https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_fuzzsupport.c?view=markup),
 [ffmpeg](https://github.com/FFmpeg/FFmpeg/blob/master/tools/target_dec_fuzzer.c).
 
 ## Build support