diff --git a/src/vendor/cigraph/CHANGELOG.md b/src/vendor/cigraph/CHANGELOG.md
index 094ca2795a..400a3a873f 100644
--- a/src/vendor/cigraph/CHANGELOG.md
+++ b/src/vendor/cigraph/CHANGELOG.md
@@ -1,5 +1,7 @@
 # igraph C library changelog
 
+## [main]
+
 ## [1.0.1]
 
 ### Fixed
diff --git a/src/vendor/igraph_version.h b/src/vendor/igraph_version.h
index 51111a99ce..72e668b943 100644
--- a/src/vendor/igraph_version.h
+++ b/src/vendor/igraph_version.h
@@ -23,11 +23,11 @@
 
 IGRAPH_BEGIN_C_DECLS
 
-#define IGRAPH_VERSION "1.0.1"
+#define IGRAPH_VERSION "1.0.1-1-g2329c0ed9"
 #define IGRAPH_VERSION_MAJOR 1
 #define IGRAPH_VERSION_MINOR 0
 #define IGRAPH_VERSION_PATCH 1
-#define IGRAPH_VERSION_PRERELEASE "cmake-experimental"
+#define IGRAPH_VERSION_PRERELEASE "1-g2329c0ed9"
 
 IGRAPH_EXPORT void igraph_version(const char **version_string,
                                   int *major,