diff '--color=auto' -Naur a/src/lib/crypto/ec.cpp b/src/lib/crypto/ec.cpp
--- a/src/lib/crypto/ec.cpp	2025-11-21 15:12:02.000000000 +0200
+++ b/src/lib/crypto/ec.cpp	2026-04-04 08:22:12.502593507 +0300
@@ -40,6 +40,10 @@
 #include "botan/ecdh.h"
 #include <cassert>
 #endif
+#include <botan/version.h>
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(3, 11, 0)
+#include <botan/ec_group.h>
+#endif
 
 namespace pgp {
 namespace ec {
diff '--color=auto' -Naur a/src/lib/crypto/exdsa_ecdhkem.cpp b/src/lib/crypto/exdsa_ecdhkem.cpp
--- a/src/lib/crypto/exdsa_ecdhkem.cpp	2025-11-21 15:12:02.000000000 +0200
+++ b/src/lib/crypto/exdsa_ecdhkem.cpp	2026-04-04 08:34:49.684582995 +0300
@@ -34,6 +34,10 @@
 #include "string.h"
 #include "utils.h"
 #include <cassert>
+#include <botan/version.h>
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(3, 11, 0)
+#include <botan/ec_group.h>
+#endif
 
 ec_key_t::~ec_key_t()
 {