diff --git a/package/stellarium/stellarium.hash b/package/stellarium/stellarium.hash
index 67e053eff7..4298c3dcde 100644
--- a/package/stellarium/stellarium.hash
+++ b/package/stellarium/stellarium.hash
@@ -1,4 +1,8 @@
 # From https://github.com/Stellarium/stellarium/releases
 sha256  e376e0dc28eae0f7c4b3686fed9c2129c69a87a371b33e24bd79559a5142d613  stellarium-25.4.tar.xz
+# From https://github.com/Stellarium/stellarium/blob/v25.4/CMakeLists.txt#L849
+sha256  55d0111d48fb11883aaee91465e642b8b640775a4d6993c2d0e7a8092758ef21  release-0.5.2.tar.gz
+# From https://github.com/Stellarium/stellarium/blob/v25.4/plugins/LensDistortionEstimator/src/CMakeLists.txt
+sha256  6e899e297485e457ec1bf84844de29921aeef674f9d5caf60277df45dca6ff76  v2.9.0.tar.gz
 # Locally computed
 sha256  3aeeb5bb98bf7041ab82cffe15efa28ac58ee2bdf162b71301f5c192be631259  COPYING
diff --git a/package/stellarium/stellarium.mk b/package/stellarium/stellarium.mk
index 48dadfec61..12a8f7aaa5 100644
--- a/package/stellarium/stellarium.mk
+++ b/package/stellarium/stellarium.mk
@@ -9,6 +9,20 @@ STELLARIUM_SOURCE = stellarium-$(STELLARIUM_VERSION).tar.xz
 STELLARIUM_SITE = https://github.com/Stellarium/stellarium/releases/download/v$(STELLARIUM_VERSION)
 STELLARIUM_LICENSE = GPL-2.0+
 STELLARIUM_LICENSE_FILES = COPYING
+
+STELLARIUM_EXTRA_DOWNLOADS = \
+	https://github.com/mity/md4c/archive/refs/tags/release-0.5.2.tar.gz \
+	https://github.com/stevengj/nlopt/archive/refs/tags/v2.9.0.tar.gz
+
+# Prevent stellarium from downloading stuff during its configure step
+define STELLARIUM_COPY_EXTRA_DOWNLOADS
+	mkdir -p $(@D)/_deps/md4c-subbuild/md4c-populate-prefix/src/
+	cp $(STELLARIUM_DL_DIR)/release-0.5.2.tar.gz $(@D)/_deps/md4c-subbuild/md4c-populate-prefix/src/
+	mkdir -p $(@D)/_deps/nlopt-subbuild/nlopt-populate-prefix/src/
+	cp $(STELLARIUM_DL_DIR)/v2.9.0.tar.gz $(@D)/_deps/nlopt-subbuild/nlopt-populate-prefix/src/
+endef
+STELLARIUM_POST_EXTRACT_HOOKS += STELLARIUM_COPY_EXTRA_DOWNLOADS
+
 STELLARIUM_DEPENDENCIES = \
 	qt5base \
 	qt5charts \