diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0892cfb8..eda0b340 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,8 +20,8 @@ endif()
 set(ROARING_LIB_NAME roaring)
 set(PROJECT_VERSION_MAJOR 4)
 set(PROJECT_VERSION_MINOR 2)
-set(PROJECT_VERSION_PATCH 0)
-set(ROARING_LIB_VERSION "4.2.0" CACHE STRING "Roaring library version")
+set(PROJECT_VERSION_PATCH 1)
+set(ROARING_LIB_VERSION "4.2.1" CACHE STRING "Roaring library version")
 set(ROARING_LIB_SOVERSION "17" CACHE STRING "Roaring library soversion")
 
 option(ROARING_EXCEPTIONS "Enable exception-throwing interface" ON)
diff --git a/doxygen b/doxygen
index 94188008..60f78a52 100644
--- a/doxygen
+++ b/doxygen
@@ -48,7 +48,7 @@ PROJECT_NAME           = "CRoaring"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = "4.2.0"
+PROJECT_NUMBER         = "4.2.1"
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/include/roaring/roaring_version.h b/include/roaring/roaring_version.h
index 33926a21..aad63ade 100644
--- a/include/roaring/roaring_version.h
+++ b/include/roaring/roaring_version.h
@@ -2,11 +2,11 @@
 // /include/roaring/roaring_version.h automatically generated by release.py, do not change by hand
 #ifndef ROARING_INCLUDE_ROARING_VERSION
 #define ROARING_INCLUDE_ROARING_VERSION
-#define ROARING_VERSION "4.2.0"
+#define ROARING_VERSION "4.2.1"
 enum {
     ROARING_VERSION_MAJOR = 4,
     ROARING_VERSION_MINOR = 2,
-    ROARING_VERSION_REVISION = 0
+    ROARING_VERSION_REVISION = 1
 };
 #endif // ROARING_INCLUDE_ROARING_VERSION
 // clang-format on
\ No newline at end of file
diff --git a/src/containers/bitset.c b/src/containers/bitset.c
index 7b84af82..7a38d072 100644
--- a/src/containers/bitset.c
+++ b/src/containers/bitset.c
@@ -904,7 +904,7 @@ int bitset_container_##opname##_nocard(const bitset_container_t *src_1,   \
 }                                                                         \
 int bitset_container_##opname##_justcard(const bitset_container_t *src_1, \
                               const bitset_container_t *src_2) {          \
-   printf("A1\n"); const uint64_t * __restrict__ words_1 = src_1->words;                 \
+    const uint64_t * __restrict__ words_1 = src_1->words;                 \
     const uint64_t * __restrict__ words_2 = src_2->words;                 \
     int32_t sum = 0;                                                      \
     for (size_t i = 0; i < BITSET_CONTAINER_SIZE_IN_WORDS; i += 2) {      \