diff --git a/CMakeLists.txt b/CMakeLists.txt
index b74ffd3..8eb962a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,7 +25,7 @@ else()
     find_package(tatami_tatami 3.0.0 CONFIG REQUIRED)
     find_package(tatami_tatami_stats 1.0.0 CONFIG REQUIRED)
     find_package(ltla_WeightedLowess 2.0.0 CONFIG REQUIRED)
-    find_package(libscran_scran_blocks 1.0.0 CONFIG REQUIRED)
+    find_package(libscran_scran_blocks 0.1.0 CONFIG REQUIRED)
 endif()
 
 target_link_libraries(scran_variances INTERFACE tatami::tatami tatami::tatami_stats ltla::WeightedLowess libscran::scran_blocks)
diff --git a/cmake/Config.cmake.in b/cmake/Config.cmake.in
index 8c9a5b2..4bafdcd 100644
--- a/cmake/Config.cmake.in
+++ b/cmake/Config.cmake.in
@@ -4,6 +4,6 @@ include(CMakeFindDependencyMacro)
 find_dependency(tatami_tatami 3.0.0 CONFIG REQUIRED)
 find_dependency(tatami_tatami_stats 1.0.0 CONFIG REQUIRED)
 find_dependency(ltla_WeightedLowess 2.0.0 CONFIG REQUIRED)
-find_dependency(libscran_scran_blocks 1.0.0 CONFIG REQUIRED)
+find_dependency(libscran_scran_blocks 0.1.0 CONFIG REQUIRED)
 
 include("${CMAKE_CURRENT_LIST_DIR}/libscran_scran_variancesTargets.cmake")
diff --git a/extern/CMakeLists.txt b/extern/CMakeLists.txt
index bc4f1bb..52778f5 100644
--- a/extern/CMakeLists.txt
+++ b/extern/CMakeLists.txt
@@ -21,7 +21,7 @@ FetchContent_Declare(
 FetchContent_Declare(
   scran_blocks
   GIT_REPOSITORY https://github.com/libscran/scran_blocks
-  GIT_TAG master # ^1.0.0
+  GIT_TAG master # ^0.1.0
 )
 
 FetchContent_MakeAvailable(tatami)