diff --git a/.github/ISSUE_TEMPLATE.md b/.github/ISSUE_TEMPLATE.md
index c1b8072bb3..e90d0a12f7 100644
--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -24,4 +24,4 @@ Describe what you expect the output to be. Knowing the correct behavior is also
 Provide any additional information here.
 
 #### Current Version:
-v2.33.0
+v2.34.0
diff --git a/src/doxygen/doxygen.cfg b/src/doxygen/doxygen.cfg
index edd536ec19..a92cbfef95 100644
--- a/src/doxygen/doxygen.cfg
+++ b/src/doxygen/doxygen.cfg
@@ -38,7 +38,7 @@ PROJECT_NAME           = "Stan"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2.33.0
+PROJECT_NUMBER         = 2.34.0
 
 # 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/src/stan/version.hpp b/src/stan/version.hpp
index f383b43160..0ad4ad6176 100644
--- a/src/stan/version.hpp
+++ b/src/stan/version.hpp
@@ -12,7 +12,7 @@
 #endif
 
 #define STAN_MAJOR 2
-#define STAN_MINOR 33
+#define STAN_MINOR 34
 #define STAN_PATCH 0
 
 namespace stan {
diff --git a/src/test/unit/version_test.cpp b/src/test/unit/version_test.cpp
index 76779cfdaf..78a0f79c71 100644
--- a/src/test/unit/version_test.cpp
+++ b/src/test/unit/version_test.cpp
@@ -3,12 +3,12 @@
 
 TEST(Stan, macro) {
   EXPECT_EQ(2, STAN_MAJOR);
-  EXPECT_EQ(33, STAN_MINOR);
+  EXPECT_EQ(34, STAN_MINOR);
   EXPECT_EQ(0, STAN_PATCH);
 }
 
 TEST(Stan, version) {
   EXPECT_EQ("2", stan::MAJOR_VERSION);
-  EXPECT_EQ("33", stan::MINOR_VERSION);
+  EXPECT_EQ("34", stan::MINOR_VERSION);
   EXPECT_EQ("0", stan::PATCH_VERSION);
 }