diff --git a/bypy/linux/__main__.py b/bypy/linux/__main__.py
index 1049e67e16..9d5ae43667 100644
--- a/bypy/linux/__main__.py
+++ b/bypy/linux/__main__.py
@@ -13,7 +13,7 @@ import time
 from functools import partial
 
 from bypy.constants import (
-    OUTPUT_DIR, PREFIX, SRC as CALIBRE_DIR, python_major_minor_version,
+    LIBDIR, OUTPUT_DIR, PREFIX, SRC as CALIBRE_DIR, python_major_minor_version,
 )
 from bypy.freeze import (
     extract_extension_modules, fix_pycryptodome, freeze_python, is_package_dir,
@@ -125,6 +125,8 @@ def copy_libs(env):
         os.chmod(j(
             dest, os.path.basename(x)),
             stat.S_IRWXU | stat.S_IRGRP | stat.S_IXGRP | stat.S_IROTH | stat.S_IXOTH)
+    for x in ('ossl-modules',):
+        shutil.copytree(os.path.join(LIBDIR, x), os.path.join(env.lib_dir, x))
 
     base = j(QT_PREFIX, 'plugins')
     dest = j(env.lib_dir, '..', 'plugins')
diff --git a/bypy/linux/launcher.c b/bypy/linux/launcher.c
index 77088353c3..d49204f45c 100644
--- a/bypy/linux/launcher.c
+++ b/bypy/linux/launcher.c
@@ -42,6 +42,9 @@ int main(int argc, char **argv) {
         if (ret < 0 || ret > (PATHLEN-2)) { fprintf(stderr, "LD_LIBRARY_PATH too long: %s:%s", lib, ldp); return 1; }
     }
     SET("LD_LIBRARY_PATH", buf)
+    ret = snprintf(buf, PATHLEN, "%s/ossl-modules", lib);
+    if (ret < 0 || ret > (PATHLEN-2)) { fprintf(stderr, "OPENSSL_MODULES too long: %s/ossl-modules", lib); return 1; }
+    SET("OPENSSL_MODULES", buf)
 
     argv[0] = exe;
     if (execv(exe, argv) == -1) {
diff --git a/src/calibre/gui2/__init__.py b/src/calibre/gui2/__init__.py
index 9f50262558..2b9f2ddf09 100644
--- a/src/calibre/gui2/__init__.py
+++ b/src/calibre/gui2/__init__.py
@@ -1383,7 +1383,9 @@ def sanitize_env_vars():
     is needed to prevent library conflicts when launching external utilities.'''
 
     if islinux and isfrozen:
-        env_vars = {'LD_LIBRARY_PATH':'/lib'}
+        env_vars = {
+            'LD_LIBRARY_PATH':'/lib', 'OPENSSL_MODULES': '/lib/ossl-modules',
+        }
     elif iswindows:
         env_vars = {}
     elif ismacos: