diff --git a/.circleci/config.yml b/.circleci/config.yml
index 5be7fd2cd388..574d390f3bc3 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -12,7 +12,7 @@ parameters:
   previous_crystal_base_url:
     description: "Prefix for URLs to Crystal bootstrap compiler"
     type: string
-    default: "https://github.com/crystal-lang/crystal/releases/download/1.13.3/crystal-1.13.3-1"
+    default: "https://github.com/crystal-lang/crystal/releases/download/1.14.0/crystal-1.14.0-1"
 
 defaults:
   environment: &env
diff --git a/.github/workflows/interpreter.yml b/.github/workflows/interpreter.yml
index aa28b15f9abc..3c74afdd329e 100644
--- a/.github/workflows/interpreter.yml
+++ b/.github/workflows/interpreter.yml
@@ -13,7 +13,7 @@ jobs:
   test-interpreter_spec:
     runs-on: ubuntu-22.04
     container:
-      image: crystallang/crystal:1.13.3-build
+      image: crystallang/crystal:1.14.0-build
     name: "Test Interpreter"
     steps:
       - uses: actions/checkout@v4
@@ -24,7 +24,7 @@ jobs:
   build-interpreter:
     runs-on: ubuntu-22.04
     container:
-      image: crystallang/crystal:1.13.3-build
+      image: crystallang/crystal:1.14.0-build
     name: Build interpreter
     steps:
       - uses: actions/checkout@v4
@@ -43,7 +43,7 @@ jobs:
     needs: build-interpreter
     runs-on: ubuntu-22.04
     container:
-      image: crystallang/crystal:1.13.3-build
+      image: crystallang/crystal:1.14.0-build
     strategy:
       matrix:
         part: [0, 1, 2, 3]
@@ -67,7 +67,7 @@ jobs:
     needs: build-interpreter
     runs-on: ubuntu-22.04
     container:
-      image: crystallang/crystal:1.13.3-build
+      image: crystallang/crystal:1.14.0-build
     name: "Test primitives_spec with interpreter"
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index a729d5f7681d..4bdcc3e0c11e 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        crystal_bootstrap_version: [1.7.3, 1.8.2, 1.9.2, 1.10.1, 1.11.2, 1.12.2, 1.13.3]
+        crystal_bootstrap_version: [1.7.3, 1.8.2, 1.9.2, 1.10.1, 1.11.2, 1.12.2, 1.13.3, 1.14.0]
         flags: [""]
         include:
           # libffi is only available starting from the 1.2.2 build images
diff --git a/.github/workflows/llvm.yml b/.github/workflows/llvm.yml
index 796b26a66c08..65d0744575b9 100644
--- a/.github/workflows/llvm.yml
+++ b/.github/workflows/llvm.yml
@@ -60,7 +60,7 @@ jobs:
       - name: Install Crystal
         uses: crystal-lang/install-crystal@v1
         with:
-          crystal: "1.13.3"
+          crystal: "1.14.0"
 
       - name: Build libllvm_ext
         run: make -B deps
diff --git a/.github/workflows/openssl.yml b/.github/workflows/openssl.yml
index 30bc74844e2b..7321abddf788 100644
--- a/.github/workflows/openssl.yml
+++ b/.github/workflows/openssl.yml
@@ -10,7 +10,7 @@ jobs:
   libssl_test:
     runs-on: ubuntu-latest
     name: "${{ matrix.pkg }}"
-    container: crystallang/crystal:1.13.3-alpine
+    container: crystallang/crystal:1.14.0-alpine
     strategy:
       fail-fast: false
       matrix:
diff --git a/.github/workflows/regex-engine.yml b/.github/workflows/regex-engine.yml
index 9587c5fae85f..e7ee002103b4 100644
--- a/.github/workflows/regex-engine.yml
+++ b/.github/workflows/regex-engine.yml
@@ -10,7 +10,7 @@ jobs:
   pcre:
     runs-on: ubuntu-latest
     name: "PCRE"
-    container: crystallang/crystal:1.13.3-alpine
+    container: crystallang/crystal:1.14.0-alpine
     steps:
       - name: Download Crystal source
         uses: actions/checkout@v4
@@ -25,7 +25,7 @@ jobs:
   pcre2:
     runs-on: ubuntu-latest
     name: "PCRE2"
-    container: crystallang/crystal:1.13.3-alpine
+    container: crystallang/crystal:1.14.0-alpine
     steps:
       - name: Download Crystal source
         uses: actions/checkout@v4
diff --git a/.github/workflows/wasm32.yml b/.github/workflows/wasm32.yml
index e35a9ad182fd..d0012b67c40f 100644
--- a/.github/workflows/wasm32.yml
+++ b/.github/workflows/wasm32.yml
@@ -12,7 +12,7 @@ env:
 jobs:
   wasm32-test:
     runs-on: ubuntu-latest
-    container: crystallang/crystal:1.13.3-build
+    container: crystallang/crystal:1.14.0-build
     steps:
       - name: Download Crystal source
         uses: actions/checkout@v4
diff --git a/.github/workflows/win_build_portable.yml b/.github/workflows/win_build_portable.yml
index d3265239c20c..889f4d80c629 100644
--- a/.github/workflows/win_build_portable.yml
+++ b/.github/workflows/win_build_portable.yml
@@ -25,7 +25,7 @@ jobs:
         uses: crystal-lang/install-crystal@v1
         id: install-crystal
         with:
-          crystal: "1.13.3"
+          crystal: "1.14.0"
 
       - name: Download Crystal source
         uses: actions/checkout@v4
diff --git a/bin/ci b/bin/ci
index d998373438e8..03d8a20a19e4 100755
--- a/bin/ci
+++ b/bin/ci
@@ -135,8 +135,8 @@ format() {
 prepare_build() {
   on_linux verify_linux_environment
 
-  on_osx curl -L https://github.com/crystal-lang/crystal/releases/download/1.13.3/crystal-1.13.3-1-darwin-universal.tar.gz -o ~/crystal.tar.gz
-  on_osx 'pushd ~;gunzip -c ~/crystal.tar.gz | tar xopf -;mv crystal-1.13.3-1 crystal;popd'
+  on_osx curl -L https://github.com/crystal-lang/crystal/releases/download/1.14.0/crystal-1.14.0-1-darwin-universal.tar.gz -o ~/crystal.tar.gz
+  on_osx 'pushd ~;gunzip -c ~/crystal.tar.gz | tar xopf -;mv crystal-1.14.0-1 crystal;popd'
 
   # These commands may take a few minutes to run due to the large size of the repositories.
   # This restriction has been made on GitHub's request because updating shallow
@@ -189,7 +189,7 @@ with_build_env() {
 
   on_linux verify_linux_environment
 
-  export DOCKER_TEST_PREFIX="${DOCKER_TEST_PREFIX:=crystallang/crystal:1.13.3}"
+  export DOCKER_TEST_PREFIX="${DOCKER_TEST_PREFIX:=crystallang/crystal:1.14.0}"
 
   case $ARCH in
     x86_64)
diff --git a/shard.yml b/shard.yml
index 2d43b601771e..4ddf0dcfb0df 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,5 +1,5 @@
 name: crystal
-version: 1.14.0
+version: 1.15.0-dev
 
 authors:
 - Crystal Core Team <crystal@manas.tech>
diff --git a/shell.nix b/shell.nix
index efadd688f0e3..6501b4a0c577 100644
--- a/shell.nix
+++ b/shell.nix
@@ -53,18 +53,18 @@ let
   # Hashes obtained using `nix-prefetch-url --unpack <url>`
   latestCrystalBinary = genericBinary ({
     x86_64-darwin = {
-      url = "https://github.com/crystal-lang/crystal/releases/download/1.13.3/crystal-1.13.3-1-darwin-universal.tar.gz";
-      sha256 = "sha256:0iri1hl23kgmlibmm64wc4wdq019z544b7m2h1bl7jxs4dk2wwla";
+      url = "https://github.com/crystal-lang/crystal/releases/download/1.14.0/crystal-1.14.0-1-darwin-universal.tar.gz";
+      sha256 = "sha256:09mp3mngj4wik4v2bffpms3x8dksmrcy0a7hs4cg8b13hrfdrgww";
     };
 
     aarch64-darwin = {
-      url = "https://github.com/crystal-lang/crystal/releases/download/1.13.3/crystal-1.13.3-1-darwin-universal.tar.gz";
-      sha256 = "sha256:0iri1hl23kgmlibmm64wc4wdq019z544b7m2h1bl7jxs4dk2wwla";
+      url = "https://github.com/crystal-lang/crystal/releases/download/1.14.0/crystal-1.14.0-1-darwin-universal.tar.gz";
+      sha256 = "sha256:09mp3mngj4wik4v2bffpms3x8dksmrcy0a7hs4cg8b13hrfdrgww";
     };
 
     x86_64-linux = {
-      url = "https://github.com/crystal-lang/crystal/releases/download/1.13.3/crystal-1.13.3-1-linux-x86_64.tar.gz";
-      sha256 = "sha256:1zf9b3njxx0jzn81dy6vyhkml31kjxfk4iskf13w9ysj0kwakbyz";
+      url = "https://github.com/crystal-lang/crystal/releases/download/1.14.0/crystal-1.14.0-1-linux-x86_64.tar.gz";
+      sha256 = "sha256:0p5b22ivggf9xlw91cbhib7n4lzd8is1shd3480jjp14rn1kiy5z";
     };
   }.${pkgs.stdenv.system});
 
diff --git a/src/SOURCE_DATE_EPOCH b/src/SOURCE_DATE_EPOCH
deleted file mode 100644
index e20d25c81b56..000000000000
--- a/src/SOURCE_DATE_EPOCH
+++ /dev/null
@@ -1 +0,0 @@
-1728432000
diff --git a/src/VERSION b/src/VERSION
index 850e742404bb..9a4866bbcede 100644
--- a/src/VERSION
+++ b/src/VERSION
@@ -1 +1 @@
-1.14.0
+1.15.0-dev