diff --git a/pkgs/anisette-v3-server/default.nix b/pkgs/anisette-v3-server/default.nix
index c2cb824..65ab7ae 100644
--- a/pkgs/anisette-v3-server/default.nix
+++ b/pkgs/anisette-v3-server/default.nix
@@ -19,12 +19,11 @@ buildDubPackage rec {
 
   dubLock = ./dub-lock.json;
 
-  # The reference Dockerfile builds with `dub build -c "static"` (statically
-  # linked D runtime). The Android-ELF loader does low-level symbol resolution
-  # and memory manipulation that is fragile with a dynamically-linked D runtime
-  # (GC/TLS conflicts), which can make the ADI provisioning step fail silently.
-  # Match the reference build config.
-  dubBuildFlags = [ "-c" "static" ];
+  # TEMP diagnostic: log the swallowed provisioning exception to find the real
+  # cause of the silent provisioning failure.
+  postPatch = ''
+    patch -p1 < ${./log-provisioning-error.patch}
+  '';
 
   buildInputs = [ zlib openssl_1_1 ];
 
diff --git a/pkgs/anisette-v3-server/log-provisioning-error.patch b/pkgs/anisette-v3-server/log-provisioning-error.patch
new file mode 100644
index 0000000..b005d51
--- /dev/null
+++ b/pkgs/anisette-v3-server/log-provisioning-error.patch
@@ -0,0 +1,11 @@
+--- a/source/app.d
++++ b/source/app.d
+@@ -156,7 +156,9 @@
+ 			ProvisioningSession provisioningSession = new ProvisioningSession(v1Adi, v1Device);
+ 			provisioningSession.provision(dsId);
+ 			log.info("Provisioning done!");
+-		} catch (Exception) {}
++		} catch (Exception e) {
++			log.error("Provisioning failed: %s", e.msg);
++		}
+ 	}