diff --git a/src/libexpr/eval-cache.cc b/src/libexpr/eval-cache.cc
index 4115196c5..3ec344c41 100644
--- a/src/libexpr/eval-cache.cc
+++ b/src/libexpr/eval-cache.cc
@@ -69,7 +69,7 @@ struct AttrDb
     {
         auto state(_state->lock());
 
-        auto cacheDir = std::filesystem::path(getCacheDir()) / "eval-cache-v5";
+        auto cacheDir = std::filesystem::path(getCacheDir()) / "eval-cache-v6";
         createDirs(cacheDir);
 
         auto dbPath = cacheDir / (fingerprint.to_string(HashFormat::Base16, false) + ".sqlite");
diff --git a/src/libfetchers/cache.cc b/src/libfetchers/cache.cc
index 85fd94590..85a33e472 100644
--- a/src/libfetchers/cache.cc
+++ b/src/libfetchers/cache.cc
@@ -37,7 +37,7 @@ struct CacheImpl : Cache
     {
         auto state(_state.lock());
 
-        auto dbPath = getCacheDir() + "/fetcher-cache-v3.sqlite";
+        auto dbPath = getCacheDir() + "/fetcher-cache-v4.sqlite";
         createDirs(dirOf(dbPath));
 
         state->db = SQLite(dbPath);
diff --git a/src/libstore/nar-info-disk-cache.cc b/src/libstore/nar-info-disk-cache.cc
index 0350c874a..69d8d2e14 100644
--- a/src/libstore/nar-info-disk-cache.cc
+++ b/src/libstore/nar-info-disk-cache.cc
@@ -86,7 +86,7 @@ public:
 
     Sync<State> _state;
 
-    NarInfoDiskCacheImpl(Path dbPath = getCacheDir() + "/binary-cache-v6.sqlite")
+    NarInfoDiskCacheImpl(Path dbPath = getCacheDir() + "/binary-cache-v7.sqlite")
     {
         auto state(_state.lock());