diff --git a/configs/config_test.go b/configs/config_test.go
index bf2f65e8c..71b1bbeb1 100644
--- a/configs/config_test.go
+++ b/configs/config_test.go
@@ -115,7 +115,12 @@ func TestConfigResolveAbsProviderAddr(t *testing.T) {
 
 func TestConfigProviderRequirements(t *testing.T) {
 	cfg, diags := testNestedModuleConfigFromDir(t, "testdata/provider-reqs")
-	assertNoDiagnostics(t, diags)
+	// TODO: Version Constraint Deprecation.
+	// Once we've removed the version argument from provider configuration
+	// blocks, this can go back to expected 0 diagnostics.
+	// assertNoDiagnostics(t, diags)
+	assertDiagnosticCount(t, diags, 1)
+	assertDiagnosticSummary(t, diags, "Version constraints inside provider configuration blocks are deprecated")
 
 	tlsProvider := addrs.NewProvider(
 		addrs.DefaultRegistryHost,
@@ -153,7 +158,12 @@ func TestConfigProviderRequirements(t *testing.T) {
 
 func TestConfigProviderRequirementsByModule(t *testing.T) {
 	cfg, diags := testNestedModuleConfigFromDir(t, "testdata/provider-reqs")
-	assertNoDiagnostics(t, diags)
+	// TODO: Version Constraint Deprecation.
+	// Once we've removed the version argument from provider configuration
+	// blocks, this can go back to expected 0 diagnostics.
+	// assertNoDiagnostics(t, diags)
+	assertDiagnosticCount(t, diags, 1)
+	assertDiagnosticSummary(t, diags, "Version constraints inside provider configuration blocks are deprecated")
 
 	tlsProvider := addrs.NewProvider(
 		addrs.DefaultRegistryHost,
diff --git a/configs/configload/testdata/expand-modules/provider-configured/child/main.tf b/configs/configload/testdata/expand-modules/provider-configured/child/main.tf
index b77075fc0..61ff4b572 100644
--- a/configs/configload/testdata/expand-modules/provider-configured/child/main.tf
+++ b/configs/configload/testdata/expand-modules/provider-configured/child/main.tf
@@ -1,8 +1,7 @@
 provider "aws" {
-  version = "1.0"
+  region = "us-west-2"
 }
 
 output "my_output" {
   value = "my output"
 }
-
diff --git a/configs/parser_test.go b/configs/parser_test.go
index 5ecd1f231..a87ad68fd 100644
--- a/configs/parser_test.go
+++ b/configs/parser_test.go
@@ -83,13 +83,12 @@ func testNestedModuleConfigFromDir(t *testing.T, path string) (*Config, hcl.Diag
 
 	parser := NewParser(nil)
 	mod, diags := parser.LoadConfigDir(path)
-	assertNoDiagnostics(t, diags)
 	if mod == nil {
 		t.Fatal("got nil root module; want non-nil")
 	}
 
 	versionI := 0
-	cfg, diags := BuildConfig(mod, ModuleWalkerFunc(
+	cfg, nestedDiags := BuildConfig(mod, ModuleWalkerFunc(
 		func(req *ModuleRequest) (*Module, *version.Version, hcl.Diagnostics) {
 			// For the sake of this test we're going to just treat our
 			// SourceAddr as a path relative to the calling module.
@@ -111,6 +110,8 @@ func testNestedModuleConfigFromDir(t *testing.T, path string) (*Config, hcl.Diag
 			return mod, version, diags
 		},
 	))
+
+	diags = append(diags, nestedDiags...)
 	return cfg, diags
 }
 
diff --git a/configs/provider.go b/configs/provider.go
index 3213e6858..8317cc830 100644
--- a/configs/provider.go
+++ b/configs/provider.go
@@ -69,6 +69,12 @@ func decodeProviderBlock(block *hcl.Block) (*Provider, hcl.Diagnostics) {
 	}
 
 	if attr, exists := content.Attributes["version"]; exists {
+		diags = append(diags, &hcl.Diagnostic{
+			Severity: hcl.DiagWarning,
+			Summary:  "Version constraints inside provider configuration blocks are deprecated",
+			Detail:   "Terraform 0.13 and earlier allowed provider version constraints inside the provider configuration block, but that is now deprecated and will be removed in a future version of Terraform. To silence this warning, move the provider version constraint into the required_providers block.",
+			Subject:  attr.Expr.Range().Ptr(),
+		})
 		var versionDiags hcl.Diagnostics
 		provider.Version, versionDiags = decodeVersionConstraint(attr)
 		diags = append(diags, versionDiags...)
diff --git a/configs/provider_test.go b/configs/provider_test.go
index 693875d2b..db8089f91 100644
--- a/configs/provider_test.go
+++ b/configs/provider_test.go
@@ -21,6 +21,8 @@ func TestProviderReservedNames(t *testing.T) {
 	_, diags := parser.LoadConfigFile("config.tf")
 
 	assertExactDiagnostics(t, diags, []string{
+		//TODO: This deprecation warning will be removed in terraform v0.15.
+		`config.tf:4,13-20: Version constraints inside provider configuration blocks are deprecated; Terraform 0.13 and earlier allowed provider version constraints inside the provider configuration block, but that is now deprecated and will be removed in a future version of Terraform. To silence this warning, move the provider version constraint into the required_providers block.`,
 		`config.tf:10,3-8: Reserved argument name in provider block; The provider argument name "count" is reserved for use by Terraform in a future version.`,
 		`config.tf:11,3-13: Reserved argument name in provider block; The provider argument name "depends_on" is reserved for use by Terraform in a future version.`,
 		`config.tf:12,3-11: Reserved argument name in provider block; The provider argument name "for_each" is reserved for use by Terraform in a future version.`,
diff --git a/configs/testdata/valid-files/provider-configs.tf b/configs/testdata/valid-files/provider-configs.tf
index a07f08be8..6077d6411 100644
--- a/configs/testdata/valid-files/provider-configs.tf
+++ b/configs/testdata/valid-files/provider-configs.tf
@@ -3,8 +3,6 @@ provider "foo" {
 }
 
 provider "bar" {
-  version = ">= 1.0.2"
-
   other = 12
 }
 
diff --git a/website/docs/configuration/providers.html.md b/website/docs/configuration/providers.html.md
index bca37ef7e..4a4771b45 100644
--- a/website/docs/configuration/providers.html.md
+++ b/website/docs/configuration/providers.html.md
@@ -177,12 +177,12 @@ works the same way as the `version` argument in a
 constraint in a provider configuration is only used if `required_providers`
 does not include one for that provider.
 
-**We do not recommend using the `version` argument in provider configurations.**
+**The `version` argument in provider configurations is deprecated.** 
 In Terraform 0.13 and later, version constraints should always be declared in
-[the `required_providers` block](./provider-requirements.html).
+[the `required_providers` block](./provider-requirements.html). The `version`
+argument will be removed in a future version of Terraform.
 
 -> **Note:** The `version` meta-argument made sense before Terraform 0.13, since
 Terraform could only install providers that were distributed by HashiCorp. Now
 that Terraform can install providers from multiple sources, it makes more sense
 to keep version constraints and provider source addresses together.
-